v0.5.0-rc.2

• PointConvertible now includes the information for TypeLayout and Fields, which reduces boilerplate code for custom points. The respective derive macro is updated to work with the updated trait.
• _vec functions now work without the derive feature and thus are always available.
• The derive feature now is disabled by default but it is still strongly recommended for custom points to avoid layout errors. This also makes procmacro dependencies optional for the functionality, since every conversion can be called without them.
• The alignment of all predefined points is increased for SSE optimization and optimized copies between C++ PCL and Rust.

Full Changelog: v0.5.0-rc.1...v0.5.0-rc.2