Allow for people to start tracking ~0.0@dev
Composer package cleanup.
Merge pull request #2 from simensen/composer-package-cleanup

Composer package cleanup
DomainEvents::append()
Merge branch 'master' of github.com:event-centric/domain-events
Allow append() to work with any DomainEvents implementation

The initial implementation of append() made assumptions about the internal
workings of the $other DomainEvents implementation. Although this would work for
any $other DomainEventsArray it would fail pretty hard for any other
implementation even if it used $events property internally.

Includes a test implmentation of DomainEvents that only implements the iterator
portions of DomainEvents. This should be enough to ensure that appending works
as expected with an entirely different implementaiton of DomainEvents.