* Adds new different reaction types.
- Adds touch, injection and ingestion reactions for entities.
- Adds tile reactions.
- Removes GasSprayerComponent in favor of SprayComponent.
- Gives fire extinguishers a safety.
- Gives spray puffs a sprite.
- Improved spray and fire extinguisher in general.
- Fire extinguisher now ACTUALLY puts out fires. Amazing, eh?
- Fire extinguisher sprays three 'clouds' at once.
- Spraying flammable chemicals at fire makes them worse. Whoops!
- Gives spray and fire extinguisher their classic sounds.
- Most chemicals now don't make puddles. Too bad!
- Space lube now makes a very slippery puddle. Honk.
- Spraying water (or using a fire extinguisher) on existing puddles makes them bigger.
* Fix solution tests
* food base now has solution container with noexamine caps
ReagentUnit now implements IComparable and IEquateable.
ReagentUnit now uses double internally.
Added multiplication without shifting for ints.
InvariantCulture for some string things.
Added units tests for Equals and CompareTo.
Added unit tests to Solution that deals with nasty fractionals.
