Log Message:
py-sphinx-copybutton: updated to 0.5.1

v0.5.1

ENH: Unselectable text is now also not highlighted when you manually highlight a \ 
code cell. Exclude unselectable text from being copied (update)
ENH: After copying, the copybutton will disappear before the icon changes back \ 
if you are no longer hovering on the code cell. FIX: Make copybutton remain for \ 
a second during success
MAINT: Add support for Python 3.10