The script events `pre-archive-cmd` and `post-archive-cmd` can be used
to perform any tasks necessary when archiving the composer project.
This functionality can be used to run unit test or and other build
process before archiving, and can be used to distribute the archive
when completed
added new POST_ROOT_PACKGE_INSTALL and POST_CREATE_PROjECT event, triggered only in create-project
changed create-package parameter 'package' to be optional, command now looks in working directory for composer project if no param is given