Rename getAliases to getAliasGroups
Merge pull request #61 from wmde/getAliasGroups

Rename getAliases to getAliasGroups
Rename getAliases to getAliasGroups
Merge in master
Update branch alias
Merge branch 'master' into 1.0.x
Fix method name after rename
Merge branch 'master' into 1.0.x
Merge branch 'master' into 1.0.x
Fix rename issue
Legacy code removal

This commit tackles the initial part of two distinct though related tasks:

* Removal of the old serialization and deserialization code.
These are the toArray and newFromArray methods.

* Swicthing Entity, Item and Property over to contain value objects
rather than the internal serialization format.
Merge pull request #62 from wmde/rem

Legacy code removal
Merge master into 1.0.x
Merge pull request #77 from wmde/1.0.x

Merge 1.0.x into master