Add .idea/ to gitignore for PyCharm (#100)

I like to live a little dangerous

Author: EwoutH

.gitignore

@@ -149,7 +149,7 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+.idea/
 
 .vscode/
 *.code-workspace