Move json serializer to new package
Add shape serialization
Add shape serialization to compiler!
Reorganize packages for dependency cleanliness!
Merge pull request #461 from NetLogo/tortoise-shape-serialization

Tortoise shape serialization
Add length!
Merge branch 'tortoise-length' of github.com:NetLogo/NetLogo into tortoise-length

Conflicts:
	src/test/org/nlogo/tortoise/dock/TestLists.scala