Update 0.2a

Updated rules to 0.2a:

• Increased hex size on Sic Semper Tyrannis map and adjusted starting positions of Tribal Axemen to give the Roman Tribunus at least a small chance of escape.
• Increased Expertise of Roman Auxiliaries from 3 to 4.
• Reduced all Tribal units Movement to 1, except for the Slingers.
• Added rule for Breaking from Contact.