Changed liquids to an enum.
renamed c_tileset to TileSet

Signed-off-by: Japa <japa.mala.illo@gmail.com>
Made detailed tiles per-tileset, rather than global.
Merge branch 'master' of https://github.com/peterix/isoworld
Now loading plant mats. reverting cmakelists till it works.
Made a better shading algorithm.
Water is now colored according to depth. Changed tilesets to reflect this. Also added a false-color tileset.
Made trees green.
renamed c_map_section to MapSection

Signed-off-by: Japa <japa.mala.illo@gmail.com>
now loading tiles from disk.
Handle negative years.
Added GUI buttons, as well as disconnection handling.
added button to follow current DF position.
Merge https://github.com/JapaMala/isoworld

Conflicts:
	CMakeLists.txt