Update binding generation

[kwabenantim]

Summary

• Make std=c++11 optional.
• Add type hints and more commentary.
• Autoformat code.
• Update deprecated/soon-to-be-deprecated parts of code e.g. import imp
• Use logging
• Add extra sanity checks for file and folder existence.
• Make some variable names more descriptive and/or more consistent with the style of the rest of the code.
• Replace manual path manipulations with library functions from os.path.
• Replace file open() and close() with with open(...) as ... : idiom.