Review of initial commit

[PeterC-DLS]

A quick review shows some issues to be addressed:

• NeXusOntology_V1.1.py should not have the version in its name. Derive version from branch or constant, instead.
• Remove the notebook as it duplicates the script.
• FedIDs should be removed L23-4
• Reading non-existent files will fail L113-6
• Use endswith L166 and later lines
• Append to list instead of combining new lists L167 and later lines
• Use a string's join method L180
• Use temporary variable instead of repeatedly dereferencing multiple dictionaries L188-207
• Allow GH token to be passed as argument or obtained from the shell environment
• Split script to functions
• Avoid use of wildcard import on L342
• Reformat string in L419
• Do not run test code L534
• Remove extraneous comments