Context Schedule

Uses UUID searching instead of ID + tag searching to reduce too many trash tags, making it easier to clean all the tags.

Restarts the global ID system when the array is empty, allowing to use the library for infinite time if used correctly.

global ID system starts from -2147483647 instead of 0, allowing to use a maxium of 4294967294 ids instead of 2147483647. Be aware that the number restarts when you append a schedule and the array is empty, so its quite impossible to overflow the global ID system