Update project version to 3.0
Update project version to 3.0

The current master branch will be released as version 3.0. This commit
anticipates this.

tkrille/osiam-osiam,tkrille/osiam-osiam,fwilhe/osiam,osiam/osiam,osiam/osiam,tkrille/osiam-osiam,osiam/osiam,fwilhe/osiam,fwilhe/osiam