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shall not be deleted by the plugin after they were added.

call cleanup before exit of plugins.
explicitly delete plugins after cleanup.

The map-outside-range-to-alpha-0 option was broken for OM double props,
Instead of adding to the awful amount of duplicated code, I moved
clamping/alpha logic to the colorcode.

added a set command to the ci files for setting the environment variable for GIT_SSH_COMMAND on windows.

You probably want to use setx once to set this variable for the user that runs ci
see "https://technet.microsoft.com/de-de/library/cc755104(v=ws.10).aspx"

Splatcloud rendering

See merge request !244

Angle based edge selection

See merge request !195

core, pluginloader and communication files

also added selection communication implementation

Commandline parsing

See merge request !247

Cmdline breaking batch

See merge request !258

attach console earlier on windows so the console output and commandline parameters work as intended.

Only implemented for bool and double properties, extending
it to other property types is trivial.

Fiexed some cppcheck warnings

See merge request !246