Workaround bug when ignoring files in a folder that doesn't exist.

Fixes issue #4 where checking that a commit changed a file didn't work if the commit introduced the file

Updates

Exits with code 1 when rules fail so that it will fail a CI build

Improve rule to check tag on a commit

Don't calculate a score after a critical rule fails.

Add a rule for counting the number of commits

Release Notes;

• make all rules that can be case-insensitive to be so by default.

All of the rules that I believe are necessary for this tool are now added. Apart from fixes and docs I think this is ready.