Cesium for Unreal v1.4.0

1.4.0 - 2021-07-01

Breaking 📣

• Tangents are now only generated for models that don't have them and that do have a normal map, saving a significant amount of time. If you have a custom material that requires the tangents, or need them for any other reason, you may set the AlwaysIncludeTangents property on Cesium3DTileset to force them to be generated like they were in previous versions.

Additions 🎉

• The main Cesium panel now has buttons to easily add a CesiumSunSky or a DynamicPawn.

Fixes 🔧

• Fixed a bug that could sometimes cause tile-sized holes to appear in a 3D Tiles model for one render frame.
• Fixed a bug that caused Cesium toolbar buttons to disappear when Editor Preferences -> Use Small Tool Bar Icons is enabled.
• Added support for other types of glTF index accessors: BYTE, UNSIGNED_BYTE, SHORT, and UNSIGNED_SHORT.

In addition to the above, this release updates cesium-native from v0.4.0 to v0.5.0. See the changelog for a complete list of changes in cesium-native.