Merge pull request #37 from pwalig/dev

Late attacking and referencing units by ids

Handle accept failure and dont store sockaddr in client

Merge pull request #30 from pwalig/dev

Address code review

Change message sent to player that lost all units

Make field::getHp return usigned int

Fix hp in d message

Merge pull request #26 from pwalig/dev

Send updates instead of board state; Fix a major bug

Merge pull request #24 from pwalig/dev

Configurable allowed name characters list

Merge pull request #20 from pwalig/dev

First version