Update paths
Remove stub physics module
Improve debug core
Make debug.stopwatch work independently of LOVE
Promote ordered events in lcore.service.event
Fix default destroy method and use ipairs
Implement a (rather slow) functable object
Add platform files for individual love versions
Add a functable timing demo

This demo showcases lcore itself, along with two modules:
utility.functable and debug.stopwatch in a demonstration of checking
individual module performance.
Fix OOP method duplication

This issue was causing the copy method of objects created with oop::mix
to be called twice, creating a ridiculous amount of garbage and making
event cleaning impossible. This is now fixed.
UI event stack rework

UI elements now have both a connect and _connect method, connect is
called by the user which calls some wrapper code from ui.element and
then calls the object's _connect method. This is convenient for oop::mix
for use with ui.draggable and ui.button as it makes sure to call each
_connect method once and only once.