This patch is similar to several earlier patches:
* D1036/rP20682 separated champion maceman template.
* D1354/rP24478 introduced maceman templates.
* D1355/rP23780 introduced axeman templates.
* D2595/rP24212 separated elephant archer from cavalry templates.
This patch introduces crossbowman templates. Currently there is only in game, `mace_champion_infantry_crossbowman.xml`, but future additions are not inconceivable, and having the templates ready also removes the need to define them in individual mods (e.g. Han China).
As for the stats:
* The <Attack> stats are mostly taken from the existing crossbowman.
* Because of its high <RepeatTime>, the <Pierce> damage is raised significantly, to keep the damage per second equal to the archer (6.7).
* Champions have double the damage of citizens, heroes double that of champions. This is also the case for other soldier types.
* Because of their higher <Projectile/Speed>, lower <Gravity> and <MaxRange>, and higher <Pierce> damage per shot, they're more precise than archers, and quite different.
* Citizens cost 30 wood + 20 metal, to differentiate them from archers, and for realism (crossbow bolts were made of metal).
* <WalkSpeed> is the same as support units and infantry heroes (i.e. inherited from `template_unit.xml`).