0.1.0

Updated README to indicate that this is the supported version, and point to documentation.

• Implemented TProfile2D's values (#111).
• Fixed a bug when reading into Pandas (#112).
• @henryiii cleaned up CI (#113).
• Fixed arrays/iterate/concatenate expressions (#116).
• Recognizing full paths of branch names in arrays/iterate/concatenate expressions (#117).
• Fix name fetch again (#118).
• Variety of fixes for ATLAS xAOD (#124).
• @andrzejnovak sorted suggested keys in KeyInFileError (#127).
• Added tests for Python 3.9 (#132).
• TrivialExecutor needs to return a TrivialFuture (accidentally pushed to master).