Issue #209: add exception handler to nuke the .zip and .err files in the case of an archive extract error
Issue #212: proposed bugfix
Issue #212: more correct version of bug fix now that I've verified that the proposed bugfix works in the wild (https://travis-ci.org/dalehenrich/metacello-work/builds/13719518) with only a test in MetacelloProjectRegistrationTestCase>>testBasicHasLoadConflicts failing ...
remove pharo-3.0 from lineup due to Issue #213 ...
Merge branch 'dev'