Release v0.13 - Githubissues

[x] CHANGELOG is written for all new changes
[x] README is updated
[x] Samples are updated
[x] Are all the dependencies up to date?
[x] Check sample_regression_spec.rb regression tests are all enabled (i.e. overwrite_sample is commented out)
[x] Bump version.rb
[x] Bump docs/conf.py versions
[x] Do a full rake locally
[x] rake sanity, and check visually
[x] Travis is passing on dev branch
[x] Merge master branch
[x] Merge release branch
[x] Push master and release branches
[x] Create GitHub release tag
[x] gem push pkg/squib-x.y.z.gem
[x] Github milestone closed
[x] Activate version on squib.readthedocs.org
[x] Bump version.rb to the next alpha
[ ] Publish on BoardGameGeek thread

andymeneely / squib