JBWAPI 0.8

• String reading/writing speed improvements
• Added javadoc for most bwapi classes (see it online at https://javabwapi.github.io/JBWAPI/)
• Added bwapi.UnitFilter to allow bot developers to use existing filters or write their own (see small examples at https://github.com/JavaBWAPI/JBWAPI/blob/develop/src/test/java/bwapi/FilterTest.java)