Release v0.16

[andymeneely]

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