clean checkout; correct -pre version set
update setversion.sh
Merge pull request #706 from mkroehnert/release

update setversion.sh
AmberCli: recategorize methods
Repl: allow identifiers whith one single character
Repl: change error handling to not print a complete stacktrace but only the error description (fixes #671)
Repl: recompile
- Adds Node >> isReferenced to avoid unneeded aliasing
- Better implementation of VariableNode >> isImmutable
- Adds IRASTTranslator >> visitOrAlias: and also alias inside BlockSequenceNode,
  fixing issue #704

- Recompiles all JS files
- Helios: Use the environment's doIt receiver for doIts.
Better formatting of Counter >> renderOn:
Merge branch 'master' of github.com:amber-smalltalk/amber
Merge pull request #708 from mkroehnert/cli

Update Repl to not print complete stacktraces on undefined variables
Speed up Helios reference browser
Fixes issue with non aliased receivers of inlined sends as shown by
@Herby here: https://github.com/amber-smalltalk/amber/commit/7211ee840888d7925ccaee97ea6d6b422c1e06e0#diff-0d0ec181feb528922777f798621b1aa2L1173
Merge branch 'master' of github.com:amber-smalltalk/amber
use 'custom' instead of 'proprietary'
Update the CHANGELOG to use the third person.
Fix a committed by mistake change in boot.js
Merge branch 'references' of https://github.com/rcsimm/amber into rcsimm-references

Conflicts:
	js/Helios-References.js
Cosmetic changes:
- Moved HLListItemNotFound to 'Helios-Exceptions'
- Adds class comments to Helios exceptions
- Reformatting of some HLListWidget methods