Full changelog on gibook

What's Changed

Collection picker property by @Nebukam in #357
[Clusters] Fix edge solidification property migration by @Nebukam in #358
Uber filters improvements by @Nebukam in #359
Planar enumerator fixes by @Nebukam in #360
General cleanup by @Nebukam in #361
General cleanup 2 by @Nebukam in #362
[Misc] Bugfixes by @Nebukam in #363
PCGDataAsset collection improvements by @Nebukam in #364
[Collections] Add keyed export slots and level export handlers by @Nebukam in #365
Collections generic entries by @Nebukam in #366

Full Changelog: v0.77.8...v0.78