deprecated Collection >> contains:
Merge pull request #739 from herby/deprecate-contains

deprecated Collection >> contains:
replace 'detect:ifNone: =' hacks with anySatisfy:
SystemAnnouncement: remove theClass instance variable + accessors
TagBrush atrribute getters (since it has setter and deleter)
reuse amber/deploy in amber/{devel,helios}
RELEASING.md: add initial release guide
RELEASING.md: log in to npm
Merge pull request #746 from mkroehnert/releasing

Release Guide
Merge pull request #745 from herby/reuse-amber-deploy

reuse amber/deploy in amber/{devel,helios}
Merge pull request #743 from mkroehnert/announcements

SystemAnnouncement: remove theClass instance variable + accessors
Merge pull request #744 from herby/tagbrush-accessors

TagBrush atrribute getters (since it has setter and deleter)
Merge pull request #742 from herby/use-anysatisfy

replace 'detect:ifNone: ~=' hacks with anySatisfy:
Release version 0.12.2
Working on 0.13.0