Dtool-symlink

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Fixed
^^^^^

- Licence file now included in release thanks to Jan Janssen (https://github.com/jan-janssen)

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Fixed
^^^^^

- Make ``SymlinkStorageBroker`` compatible with dtoolcore 3.4.0

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Changed
^^^^^^^

- Simplified the way to specify the symbolic link path in the
SymLinkStorageBroker

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Fixed
^^^^^

- Fixed issue where the symbolic link was not fully resolved

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Fixed
^^^^^

- More graceful exit if one presses Cancel in file browser
- Data directory now falls back on click command line prompt if TkInter has issues