Reuse exisintg include node i.s.o. deletion
Add some default constraints
Merge branch 'Issue#3'
Merge branch 'Issue#3' into Issue#5
Migrate i.s.o. create
Merge branch 'master' into Issue#5
Constraints: Return filename, register rules
Update formatter
Rollback elements available now
Find SQL changes w/o rollback
Merge branch 'Issue#5'