some GUI tweaks

Added winding reversal, though undoing it isn't quite ready yet.

Generalized SetContentsHistory to an EditHistory

Some renaming

Redrew selection icons to be clearer

Added functionality for getting a primitive name from a radial.

Radial saving and reading from files

Added object list representation for radials

Added the radial type, this one sure has been on my wishlist for a while. :)

Added select by type. Selection is now preserved over operations.

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mercurial