Point users to row.

README.md

@@ -15,6 +15,8 @@ The [**signac** framework](https://signac.io) helps users manage and scale file-
 The **signac-flow** tool provides the basic components to set up simple to complex workflows for projects managed by the [**signac** framework](https://signac.io).
 That includes the definition of data pipelines, execution of data space operations and the submission of operations to high-performance super computers.
 
+> Note: Check out [row](https://row.readthedocs.io), the actively maintained spiritual successor to **signac-flow**.
+
 ## Resources
 
 - [Framework documentation](https://docs.signac.io/):

doc/index.rst

@@ -1,11 +1,16 @@
 signac-flow package documentation
 =================================
 
+.. tip::
+
+   Check out row_, the actively maintained spiritual successor to **signac-flow**.
+
 .. note::
 
     This is documentation for the **signac-flow** package, which is part of the signac_ framework.
     See `here <signac-docs_>`_ for a comprehensive introduction to the **signac** *framework*.
 
+.. _row: https://row.readthedocs.io
 .. _signac: https://signac.io/
 .. _signac-docs: https://docs.signac.io/