Merge branch 'release/0.16.0' into develop
Rename playerAliases variable to customAliases.
Rename functions.
Separate alias finding logic into separate function.
Remove player outlines dependency on main include file by shifting things around.
Add JsonCpp.
Add retrieval of aliases from ETF2L.
Add documentation for changes.
Merge branch 'feature/player-aliases-etf2l' into develop
Add some checks for Steam IDs being valid.
Fix aliases not actually being output.

References are tricky.
Add a default value for enum value (because apparently it's random otherwise).
Remove malfunctioning GetPlayerName hook.
Update version number.
Update changelog.
Merge branch 'release/0.17.0'