diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 3fd77ba..0431d1a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -7,10 +7,10 @@ jobs:
     name: Publish reveal.js slides
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: 3.12
       - run: pip install -r requirements.txt
       - run: sudo apt update -qy && sudo apt install ffmpeg -qy
       - run: jupyter nbconvert *.ipynb --to slides --execute
@@ -28,10 +28,20 @@ jobs:
                 sleep 10
             done
       - run: mv *.slides.html *.pdf dist/. && mv dist/index.slides.html dist/index.html
-      - uses: JamesIves/github-pages-deploy-action@v4.4.3
-        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-        name: Deploy to gh-pages
+      - uses: actions/upload-pages-artifact@v3
         with:
-          branch: gh-pages
-          folder: dist
-          single-commit: true
+          path: "dist/"
+
+  deploy:
+    if: github.ref == 'refs/heads/main'
+    needs: build
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/deploy-pages@v4
+        id: deployment
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1c74a33..418dc91 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 repos:
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v4.6.0
     hooks:
     - id: check-yaml
     - id: end-of-file-fixer
@@ -9,12 +9,12 @@ repos:
     - id: mixed-line-ending
 
   - repo: https://github.com/psf/black
-    rev: 23.7.0
+    rev: 24.4.2
     hooks:
     - id: black
     - id: black-jupyter
 
   - repo: https://github.com/kynan/nbstripout
-    rev: 0.6.1
+    rev: 0.7.1
     hooks:
     - id: nbstripout
diff --git a/index.ipynb b/index.ipynb
index ee5accf..03e2006 100644
--- a/index.ipynb
+++ b/index.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "1e4bbd6c",
+   "id": "0",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -25,7 +25,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "90fd5319",
+   "id": "1",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -38,7 +38,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a996e3a9",
+   "id": "2",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -51,7 +51,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "70577fd4",
+   "id": "3",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -76,7 +76,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "3a4c2d2b",
+   "id": "4",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -91,7 +91,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3b94f2de",
+   "id": "5",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -107,7 +107,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bfcce141",
+   "id": "6",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -129,7 +129,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ee86b416",
+   "id": "7",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -150,7 +150,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ad2d79a4",
+   "id": "8",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -172,7 +172,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "85bfe558",
+   "id": "9",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -191,7 +191,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "82d9cd01",
+   "id": "10",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -204,7 +204,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "335467c3",
+   "id": "11",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -222,7 +222,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7322c136",
+   "id": "12",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -237,7 +237,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "65761e85",
+   "id": "13",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -252,7 +252,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "3edce3b8",
+   "id": "14",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -267,7 +267,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "588ee948",
+   "id": "15",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -281,7 +281,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "072d5a5d",
+   "id": "16",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -294,7 +294,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1396fd65",
+   "id": "17",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -307,7 +307,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5c7e6270",
+   "id": "18",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -323,7 +323,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "cd64a94e",
+   "id": "19",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -337,7 +337,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6a102a59",
+   "id": "20",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -351,7 +351,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "337b65d8",
+   "id": "21",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -365,7 +365,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "b322274b",
+   "id": "22",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -380,7 +380,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "9c108a19",
+   "id": "23",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -395,7 +395,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "76c3628a",
+   "id": "24",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -410,7 +410,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "cb9c4c0e",
+   "id": "25",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -425,7 +425,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "0adc2b5b",
+   "id": "26",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -440,7 +440,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5eb0baed",
+   "id": "27",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -455,7 +455,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e50b06bb",
+   "id": "28",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -470,7 +470,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8a840405",
+   "id": "29",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -485,7 +485,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1290bd15",
+   "id": "30",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -498,7 +498,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "635bf31b",
+   "id": "31",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -514,7 +514,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "accaff0c",
+   "id": "32",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -528,7 +528,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "36790523",
+   "id": "33",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -542,7 +542,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "464ae3a4",
+   "id": "34",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -556,7 +556,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "b262961e",
+   "id": "35",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -571,7 +571,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4a14413a",
+   "id": "36",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -586,7 +586,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c6b94f73",
+   "id": "37",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -600,7 +600,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "67aece5f",
+   "id": "38",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -615,7 +615,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "0c6f23f8",
+   "id": "39",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -629,7 +629,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6bf0fba9",
+   "id": "40",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -644,7 +644,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7174d369",
+   "id": "41",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -657,7 +657,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "751368a5",
+   "id": "42",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -673,7 +673,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1c0a11c4",
+   "id": "43",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -687,7 +687,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6075a6c4",
+   "id": "44",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -703,7 +703,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "3b121b05",
+   "id": "45",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -716,7 +716,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7a353944",
+   "id": "46",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -729,7 +729,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "b43a2a34",
+   "id": "47",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -744,7 +744,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "20cfb920",
+   "id": "48",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -761,7 +761,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "73b4df80",
+   "id": "49",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -775,7 +775,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "80333ae0",
+   "id": "50",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -789,7 +789,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "afe3ee9d",
+   "id": "51",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -804,7 +804,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "34882191",
+   "id": "52",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -819,7 +819,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "071949f0",
+   "id": "53",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -833,7 +833,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a3f81929",
+   "id": "54",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -846,7 +846,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7bfab075",
+   "id": "55",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
diff --git a/pandas-real-data.ipynb b/pandas-real-data.ipynb
index 3162adf..bd9aa4f 100644
--- a/pandas-real-data.ipynb
+++ b/pandas-real-data.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "1e4bbd6c",
+   "id": "0",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -25,7 +25,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1480d7d2",
+   "id": "1",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -44,7 +44,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "b16c9318",
+   "id": "2",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -61,7 +61,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "189a6a56",
+   "id": "3",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -76,7 +76,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5a8ff4f2",
+   "id": "4",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -103,7 +103,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b51a0c7d",
+   "id": "5",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -116,7 +116,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "ce8adc78",
+   "id": "6",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -129,7 +129,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0d21d31d",
+   "id": "7",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -142,7 +142,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e83ba53f",
+   "id": "8",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -155,7 +155,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0b5f136c",
+   "id": "9",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -168,7 +168,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7e050a60",
+   "id": "10",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -182,7 +182,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "08bcb715",
+   "id": "11",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -197,7 +197,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "db665ad2-5527-43cd-955c-8e8c9576e5c2",
+   "id": "12",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -214,7 +214,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "0d8260e0-fee7-4eaa-96c6-49ed87fd6821",
+   "id": "13",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -228,7 +228,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b7626329",
+   "id": "14",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -241,7 +241,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d983ca3c",
+   "id": "15",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -255,7 +255,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "9d8dbd1d",
+   "id": "16",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -269,7 +269,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "608f38cc",
+   "id": "17",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -284,7 +284,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a1ff1a9e",
+   "id": "18",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -301,7 +301,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "22ff9ea5",
+   "id": "19",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -322,7 +322,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4e477e04",
+   "id": "20",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -348,7 +348,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4be61315",
+   "id": "21",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -363,7 +363,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "0daa9d3c",
+   "id": "22",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -380,7 +380,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "addfaa73",
+   "id": "23",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -405,7 +405,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4e95a2b7",
+   "id": "24",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -421,7 +421,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4b05627a",
+   "id": "25",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -440,7 +440,7 @@
   {
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@@ -456,7 +456,7 @@
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@@ -469,7 +469,7 @@
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+   "id": "28",
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@@ -482,7 +482,7 @@
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+   "id": "29",
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@@ -496,7 +496,7 @@
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@@ -511,7 +511,7 @@
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+   "id": "31",
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@@ -526,7 +526,7 @@
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+   "id": "32",
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@@ -540,7 +540,7 @@
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@@ -557,7 +557,7 @@
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@@ -573,7 +573,7 @@
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-   "id": "9c6bc71b",
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@@ -588,7 +588,7 @@
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@@ -602,7 +602,7 @@
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+   "id": "37",
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@@ -618,7 +618,7 @@
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@@ -645,7 +645,7 @@
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-   "id": "716cbfe9",
+   "id": "39",
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@@ -664,7 +664,7 @@
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-   "id": "4d0a1cb2",
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@@ -687,7 +687,7 @@
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+   "id": "41",
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@@ -716,7 +716,7 @@
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   {
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-   "id": "930d9fb5",
+   "id": "42",
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diff --git a/pandas-toy-data.ipynb b/pandas-toy-data.ipynb
index cfd3294..59953bf 100644
--- a/pandas-toy-data.ipynb
+++ b/pandas-toy-data.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
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-   "id": "1e4bbd6c",
+   "id": "0",
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@@ -25,7 +25,7 @@
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+   "id": "1",
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@@ -39,7 +39,7 @@
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+   "id": "2",
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@@ -54,7 +54,7 @@
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@@ -69,7 +69,7 @@
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@@ -83,7 +83,7 @@
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@@ -97,7 +97,7 @@
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@@ -112,7 +112,7 @@
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@@ -126,7 +126,7 @@
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@@ -147,7 +147,7 @@
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@@ -162,7 +162,7 @@
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@@ -177,7 +177,7 @@
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@@ -191,7 +191,7 @@
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@@ -206,7 +206,7 @@
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@@ -221,7 +221,7 @@
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@@ -237,7 +237,7 @@
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@@ -258,7 +258,7 @@
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@@ -275,7 +275,7 @@
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@@ -290,7 +290,7 @@
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@@ -305,7 +305,7 @@
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@@ -320,7 +320,7 @@
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@@ -335,7 +335,7 @@
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@@ -349,7 +349,7 @@
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@@ -367,7 +367,7 @@
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@@ -382,7 +382,7 @@
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@@ -397,7 +397,7 @@
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@@ -412,7 +412,7 @@
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@@ -426,7 +426,7 @@
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@@ -453,7 +453,7 @@
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@@ -468,7 +468,7 @@
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@@ -483,7 +483,7 @@
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@@ -498,7 +498,7 @@
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@@ -513,7 +513,7 @@
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@@ -529,7 +529,7 @@
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@@ -543,7 +543,7 @@
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+   "id": "34",
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@@ -569,7 +569,7 @@
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@@ -583,7 +583,7 @@
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@@ -597,7 +597,7 @@
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@@ -611,7 +611,7 @@
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@@ -625,7 +625,7 @@
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@@ -639,7 +639,7 @@
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+   "id": "40",
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@@ -653,7 +653,7 @@
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-   "id": "94c6890a",
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@@ -666,7 +666,7 @@
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-   "id": "15da652a",
+   "id": "42",
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@@ -689,7 +689,7 @@
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+   "id": "43",
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@@ -711,7 +711,7 @@
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-   "id": "4da84c1f",
+   "id": "44",
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@@ -727,7 +727,7 @@
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-   "id": "adf0800b",
+   "id": "45",
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@@ -742,7 +742,7 @@
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-   "id": "cdb6aa48",
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@@ -764,7 +764,7 @@
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-   "id": "3271a88e",
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@@ -788,7 +788,7 @@
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-   "id": "894d1cf3",
+   "id": "48",
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@@ -806,7 +806,7 @@
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-   "id": "37561fa4",
+   "id": "49",
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@@ -822,7 +822,7 @@
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@@ -839,7 +839,7 @@
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-   "id": "e8bc6268",
+   "id": "51",
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@@ -853,7 +853,7 @@
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-   "id": "2e284de3",
+   "id": "52",
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@@ -867,7 +867,7 @@
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-   "id": "11d9291d",
+   "id": "53",
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@@ -881,7 +881,7 @@
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-   "id": "0b0eb479",
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@@ -897,7 +897,7 @@
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@@ -911,7 +911,7 @@
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@@ -925,7 +925,7 @@
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-   "id": "4cc2cc33",
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@@ -949,7 +949,7 @@
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@@ -963,7 +963,7 @@
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@@ -979,7 +979,7 @@
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@@ -994,7 +994,7 @@
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@@ -1008,7 +1008,7 @@
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@@ -1027,7 +1027,7 @@
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@@ -1041,7 +1041,7 @@
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@@ -1061,7 +1061,7 @@
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@@ -1076,7 +1076,7 @@
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@@ -1091,7 +1091,7 @@
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@@ -1106,7 +1106,7 @@
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@@ -1121,7 +1121,7 @@
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@@ -1136,7 +1136,7 @@
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@@ -1151,7 +1151,7 @@
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@@ -1166,7 +1166,7 @@
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@@ -1181,7 +1181,7 @@
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@@ -1196,7 +1196,7 @@
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+   "id": "74",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -1211,7 +1211,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5f1be5f7",
+   "id": "75",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -1227,7 +1227,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "325e91c9",
+   "id": "76",
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
@@ -1240,7 +1240,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "055f542c",
+   "id": "77",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"