User folder startup.m
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Create a startup.m file in the userpath directory during setup to ensure correct sourcing of the pathdef.m in the user directory. This will fix a bug where the user-path information is lost when starting MATLAB from arbitrary folders which do not contain a pathdef definition even if a pathdef.m file is present in the user directory.
Increment internal version number so that the user is reminded to execute the ita_toolbox_setup for existing installations.