helloer

Game renderer [supports](https://github.com/Soldat/soldat/blob/2a46e80ecec5f5d8bbe02bba067fb555b854dbf7/client/MapGraphics.pas#L250-L319) multi texturing for polygons, but we need to update [.PMS map format](https://wiki.soldat.pl/index.php/Map) to make use of it. Ideally, this update to map format should be backwards compatible....

Fix warnings provided by clippy

1

https://github.com/rust-lang-nursery/rust-clippy You have to run `cargo clippy` for soldank and gfx2d separately.