Start work on List class. I'm not quite sure what i'm doing here, but it seems to work.
List watchers will now scroll.
Worked more on list watchers - they now scroll mostly, and with a Scratch-style scrollbar.
Fixed scrolling.
Merge branch 'LLK/master'
Add show/hide list blocks, fix list reporters, and fix show/hide var (issue was with multiple sprites having same local variable name).
Some list watcher style changes.
Merge pull request #30 from Scimonster/list-watchers

List watchers