Bumped version

Updated release notes

Merge pull request GitTools#45 from JakeGinnivan/Polishing

Polishing

Some cleanup

Should use current directory, not exe directory to run

Fixed chocolatey build

Added chocolatey build

Format issue number at start of release note item. Fixes GitTools#31

Fixes GitTools#20 - pull requests should not be included

Warn if no output file is specified rather than error, and handle tha…

…t arg not being passed