Merge pull request #38 from treeform/testing2

Add tests for 7gui.

Add tests for more examples.

f

Make calculator tests also use std/unittests

f

More state verification on semantic nodes.

AI really like unit tests module, let it use unit tests module.

Merge pull request #37 from treeform/ui_scale_2

Add UI scaling.

Merge pull request #36 from RowDaBoat/master

Small typo fix

Update the code in Getting Started, clarify requirements.

Merge pull request #35 from treeform/release/silky-0.0.2

Release 0.0.2.