Add printing of help if no options are input by user
Ensure that only Unix newlines are written, even if used on Windows
Trim trailing space
Bump version to 0.2.5. Update changelog
Fix spacing in help string
Move change log to CHANGELOG. Update README.
PEP-8 the comments
PEP-8 the variables
Update header formatting for years
Use string formatting to reduce variable repetition when creating the reference string