The stillat/common package contains features that are common to many different applications that developers build. This includes an extended version of the stillat/collection library (this extension adds sorting and extra features, for example).
This library is currently being rewritten for a version 3 release. This new release will remove the Laravel framework as a requirement (integration with Laravel will still be possible though).
The docs will appear in the Stillat/docs repository located at https://github.com/Stillat/docs. This is done so all the Stillat packages are documented in one location, which makes it much easier for me. Some basic documentation may appear in this readme at a later date, so check back!