Super String Thing updated to v1.1

Super String Thing has been updated to v1.1, an update primarily focused on improving performance and CPU load. An additional mono/poly mode switch has also been added to assist with performance issues. The general CPU load has been reduced by about 20% (as much as 50% with some patches), making multiple instances of Super String Thing a viable option.

The two Super String Thing Demos have also been updated to reflect the changes and now both include the full set of presets from the full release version.