Merge pull request #110 from djdeath/master

ArrayPort: change isAttached() to return true with no argument if at least one socket
New canAttach method for checking if connection can be attached to a port
Icon support to help visual editors, fixes #112
Stop subgraph on shutdown
Enabling local graph loading
Merge pull request #113 from Evangenieur/master

Enabling local graph loading
Update changelog
Network: send number when sending initials if port's type is number