Information missing from data messages

So, there are a number of things which are missing from the data messages which would be really nice to have:

* Unit acceleration, deceleration, turn rate
* Unit strengths/weaknesses
* Unit build/kill score
* Weapon effects
* Ability costs
* Enemy weapon/shield/armor/range upgrades

No files or tests are named. Start by reviewing the repository's protocol definitions and how data messages are currently represented; the requested fields need to be scoped and agreed individually. Done means the selected message additions are specified, implemented, and verified without leaving the listed requirements ambiguous.

Written by the indexing model from the issue text.