Update for release
tagging release
updating lockfile
tagging 3.1.13
Merge pull request bcrypt-ruby#172 from codahale/gem_3-1-12-rc RC for 3.1.12 release
RC for 3.1.12 release With support for 2.3-2.5 on Windows and Fedora 28 with libxcrypt
Version bump to 3.1.11
Version bump to 3.1.10
Version bump to 3.1.9