Merge pull request amber-smalltalk#623 from herby/metadata-fixes

Metadata fixes

Last commit before decoupling globals

fixes issue #532

Fix package.json to be able to publish.

Changelog update for release

Merge pull request amber-smalltalk#331 from mkroehnert/fixes

Compilation error/deprecations fixes + unused code removal

Updated CHANGELOG for 0.9.1 release

changelog file