Starting to automate semver updates
Found out sed doesn't support \d
Fixed up original last minor sed
Added patch branch support and semver requisite
Completed update-semver.sh
Added note to RELEASING.md
Release 2.1.1
Created CONTRIBUTING.md
Added heading for style
Release 2.1.2
Added `package.json` for `foundry` dependencies
Updated RELEASING notes to use `foundry`
Installed foundry and plugins for `gratipay-badge`
Ignoring node_modules/
Release 2.1.3