Merge pull request #29 from bpieber/master

Test and fix for DirectoryEntry>>#splitNameVersionExtension
Add back World/Quit, 2 fixes to Directories (thanks Bernhard and Ken)
rename 2012
Tweaks from Squeak. DateAndtime cleanup. Morphic cleanup and speedup.
Core-Packages.pck.st loads them all (thanks Ken). OptionalPackagesForCuis.md
OptionalPackagesForCuis.md
OptionalPackagesForCuis.md
Superfast analysis of huge packages (Aida). Color cleanup.
Many tweaks, mostly to enable Morphic 3
Enhancements to Preferences (thanks Hari). minor tweaks.
Various fixes and enhancements. Thanks Douglas, Nicolas, Ben, Ken and Levente.
Exceptions fix, Expression Chain. Both by Andres Valloud. Minor tweaks and fixes.
tweaks
Very early pre-alpha sneak preview of Morphic 3