Note about backward compatibility:

Every new version of the level editor adds features. This can make a new version non-backward compatible with an older version of the level editor. If the second number of the version changes (ex. 1.2 -> 1.3) this means that 1.3 is not backward compatible with 1.2. Otherwise (ex. 1.3 -> 1.3.1) the versions are compatible. That is also why the Level.h file has only 2 numbers for a version (ex. #1.3) since the .zle file becomes non-backward compatible. When it comes to .tmap and .part files, these do not check whether or not the correct version is used, so it may just crash.