Move top-level newfol code into a modulino block.

This allows the main program to be loaded as a module and therefore tested.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add symlink to allow main program to be loaded as module.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add tests for View.is_callback_type.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>