Unit/Integration-Tests against different 3ds Max Versions

[cb109]

To make maintenance of this project easier for the coming future, it would be extremely helpful to have an automated or at least half-automated toolchain to check whether its core functionality works with a specific 3ds Max version.

In its simplest form, this could be a file with tests that are run from within Sublime and talk to the first 3ds Max instance they find, reporting any errors due to changed APIs or not being able to communicate.

Ideally we could just specify a list of paths to 3dsmax.exe files of multiple versions and let a script do the rest. That would however require some form of process management alà https://github.com/cb109/maxjob.

There should be docs about how to run the tests to make it easier for other people to give feedback on compatibility of more exotic 3ds max versions.