Added unit tests and updated docs

Added method - getDiceNotation() that returns the raw dice notation. …

…Bugfixes - Invalid dice notation input has been patched, dice.__concat would exclude the sets if < 1 thus defaulting them to 1.

Bugfix - When using sets the bonus value would default to the dice nu…

…m. Dice num, faces, and sets can now be negative

New Features - Dice cache, Changed dice:setMin, Benchmark testing sho…

…ws huge performance boost

Bugfix - Negative bonus and rerolls were considered positive due to a…

… pattern capture loophole

Deprecated dice.chance, Added documentation and example files using L…

…Doc, Refactored code for clarity

Optimizations for pattern matching

New Features - Dice sets, Dice instance minimums, Dice class default …

…min = 1, Lots of optimizations, Removed dice.odds.lua, Changed dice:roll() no longer returns a table, malformed dice notation will cause an error and crash

New Feature - Dice Minimum

Bugfix Typo - Table.unpack() should jus be unpack()