Fixing file names

[notbrood]

Only some files in the lib folder are following similar order, some files are named in camelCase, some are in Uppercase, some are in snake_case, it should all named in a similar naming convention.

[markhallak]

We are following the camelCase naming convention. I have fixed the naming of some files. I didn't push the updates yet.

So I don't think this issue is needed. Thanks for pointing it out anyway!