adds code copy button in docs

docs/conf.py

@@ -42,6 +42,7 @@ extensions = [
     "sphinxcontrib.bibtex",
     "myst_parser",
     "autodocsumm",
+    "sphinx_copybutton",
 ]
 
 # mathjax hacks

docs/requirements.txt

@@ -5,7 +5,8 @@ sphinx-book-theme==0.3.3
 myst-parser==0.18.1
 sphinxcontrib-bibtex==2.5.0
 autodocsumm==0.2.9
+sphinx-copybutton
 
 # basic python
-numpy==1.24.1
-matplotlib==3.6.2
+numpy
+matplotlib