Releasing 2.0.4 (#588)

* Bump acorn from 6.3.0 to 6.4.1

Bumps [acorn](https://github.com/acornjs/acorn) from 6.3.0 to 6.4.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](acornjs/acorn@6.3.0...6.4.1)

Signed-off-by: dependabot[bot] <[email protected]>

* Add conditional to show the version notice

* Update the readme file and screenshots

* Replace screenshots with optimized images

* Fix missed space between paragraphs and a link

* Fix minor space issue

* Fix #546 Wrong publish date for custom statuses

* Bump version to 2.0.4-alpha.2

* Fix #546 - Only update publish date on status transition

* Bump version to 2.0.4-alpha.3

* Update the changelog and version to 2.0.4

* Update the version notices and polyfill-ctype libs

* Remove DIRECTORY_SEPARATOR

* Update version to 2.0.4-beta.1

* Add Upgrade to Pro menu link

* Implement the Upgrade to Pro submenu

* Bump version to 2.0.4-beta.2

* Update the issue templates

* Preparing to release 2.0.4

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/ISSUE_TEMPLATE/release-plugin.md → .github/ISSUE_TEMPLATE/release-free-plugin.md

@@ -1,13 +1,13 @@
 ---
-name: Release PublishPress (team only)
+name: Release the Free version (team only)
 about: Describes default checklist for the plugin's release process.
-title: Release PublishPress version [VERSION]
+title: Release PublishPress v[VERSION]
 labels: release
 assignees: ''
 
 ---
 
-To release the plugin, please make sure to check all the checkboxes below.
+To release the Free plugin please make sure to check all the checkboxes below.
 
 ### Pre-release Checklist
 

.github/ISSUE_TEMPLATE/release-add-on.md → .github/ISSUE_TEMPLATE/release-pro-plugin.md

@@ -1,13 +1,13 @@
 ---
-name: Release Add-on (team only)
-about: Describes default checklist for the plugin's add-on release process.
-title: Release [ADD-ON] version [VERSION]
+name: Release the Pro version (team only)
+about: Describes default checklist for releasing the Pro plugin;
+title: Release PublishPress Pro v[VERSION]
 labels: release
 assignees: ''
 
 ---
 
-To release the add-on plugin, please make sure to check all the checkboxes below.
+To release the Pro plugin please make sure to check all the checkboxes below.
 
 ### Pre-release Checklist
 

composer.json

@@ -33,7 +33,7 @@
     "twig/twig": "1.37.1",
     "pimple/pimple": "~3.0",
     "alledia/wordpress-plugin-framework": "~0.6",
-    "publishpress/wordpress-version-notices": "^1.0"
+    "publishpress/wordpress-version-notices": "^1"
   },
   "require-dev": {
     "bartlett/php-compatinfo": "^5.2",