TEXTURES parser: part of a TEXTURES filename is now used as a path in Image Browser. For example, textures from "textures.stuff" will be located in "[TEXTURES]/stuff" in the Image Browser.
TEXTURES parser: added "//$GZDB_SKIP" special comment. Parsing of the file is stopped after this comment is encountered.
Updated documentation.
Increased maximum zoom level in Classic modes to 3000%.
Added "1 mp" option in grid size menu.
Added "400%" option in zoom menu.
Renamed "Toggle GZDoom rendering effects" action to "Toggle Geometry Effects".
Sync camera position: Visual Camera height is now changed only if camera is above or below current sector.
Classic modes: view was not redrawn after "Test map from current position" action.
"Test map from current position" action: incorrect player start was used when a map had several Player 1 Start things.
