Added more tests and Pep8 fixes

[lordlabuckdas]

• Added more tests and fixed some existing ones

• Coverage increased from 65% to 91% (tested locally with pytest)

• Pep8 fixes to the whole repo

Edit:

• Fixed long strings to comply with pep8

• Changed permissions of 2 test files (from 755 to 644), they were skipped in testing because of executable permissions

• Changed format-strings to string concatenation to add python3.5 support

Ref #187

[glaslos]

Fixed long strings to comply with pep8

@afeena or @viskey98 do you remember what line length we accept? I don't think we go strict pep8 (I also disagree with the 80 chars).

[lordlabuckdas]

@glaslos, Travis CI's pycodestyle has --max-line-length 120. So, if that's the desired character length, I'll reformat my branch to comply with it.

[glaslos]

@lordlabuckdas that sounds about right 👍

[glaslos]

LGTM. Nice work and thanks for adding tests and cleaning the code!

[afeena]

Thanks @lordlabuckdas :) looks great!

[lordlabuckdas]

Glad I could be of help 😄