Improved tier visibility for client / server
Additional tier fixes
cosmetic changes
More tier support
Merge remote-tracking branch 'wavy/master' into tiers
Done some improvements to battle handling
updated relay station's network protocol
Handled Compatibility

Now network messages are compatible between old & new servers, old & new clients.
Protocol version upgraded to 2,0
Fix bug in network protocol typing
Merge pull request #316 from po-devs/tiers

Tiers