Release 2.0.0

Release with fixed build warnings

Minor build warning fixes

• Fixed integer cating for string formatter

1.0.4

• Removed internal queue for consistency
• Thread safety + save locking

1.0.3

• Fixed threading issues.
• Added more test cases.
• Scheduler is now limited to only one execution: i.e., calling startWithCompletion: multiple times will only result in one execution.