DOC: add scientific python development guide (#259)

* FIX: set `FORCE_COLOR` to `1` instead of `yes`

docs/develop.md

@@ -1002,6 +1002,7 @@ Do you have other recommendations? Edit this page
 :::{rubric} Software development in Python
 :::
 
+- [Scientific Python Library Development Guide](https://learn.scientific-python.org/development/) for scientists and research software engineers.
 - [Complete Python Development Guide ― testdriven.io](https://testdriven.io/guides/complete-python)
 - _Effective Python: 90 Specific Ways to Write Better Python_ (2019) by Brett Slatkin
   {cite}`slatkinEffectivePython902019`. See also

tox.ini

@@ -20,7 +20,7 @@ description =
   Build documentation and API through Sphinx
 passenv = *
 setenv =
-  FORCE_COLOR = yes
+  FORCE_COLOR = 1
 
 [testenv:doclive]
 allowlist_externals =
@@ -48,7 +48,7 @@ description =
   Set up a server to directly preview changes to the HTML pages
 passenv = *
 setenv =
-  FORCE_COLOR = yes
+  FORCE_COLOR = 1
 
 [testenv:docnb]
 allowlist_externals =
@@ -65,7 +65,7 @@ description =
 passenv = *
 setenv =
   EXECUTE_NB = yes
-  FORCE_COLOR = yes
+  FORCE_COLOR = 1
 
 [testenv:docnblive]
 allowlist_externals =
@@ -94,7 +94,7 @@ description =
 passenv = *
 setenv =
   EXECUTE_NB = yes
-  FORCE_COLOR = yes
+  FORCE_COLOR = 1
 
 [testenv:docnb-force]
 allowlist_externals =
@@ -105,7 +105,7 @@ description =
   Execute ALL Jupyter notebooks and build documentation with Sphinx
 passenv = *
 setenv =
-  FORCE_COLOR = yes
+  FORCE_COLOR = 1
   FORCE_EXECUTE_NB = yes
   PYTHONHASHSEED = 0
 
@@ -131,7 +131,7 @@ description =
   Check external links in the documentation (requires internet connection)
 passenv = *
 setenv =
-  FORCE_COLOR = yes
+  FORCE_COLOR = 1
 
 [testenv:nb]
 allowlist_externals =