update style format

PR changes style formatting for a lot of files. Mostly trailing whitespace, missing new lines, etc. Like previous PR, specs are passing locally. If you want to merge, I recommend testing this branch first.

Only concern is removing brackets for eb method parameters like this:
https://github.com/chancefeick/gantree/commit/00419aa60a74377db4568b1b92e7630c25022918#diff-b2aefc1908727a17f8232dedb2508e98L13