Changes since 1.1.5-preview:

- Updated LICENSE files
- Shadows fixes (see PR #1336)

Package version 1.1.5-preview

Package version 1.1.4-preview

Merge pull request #1169 from Unity-Technologies/API-validation-impro…

…vement

API validation improvement

Merge pull request #1163 from Unity-Technologies/lw-target-texture-flip

Fixed Y-flip in LW when a camera is rendering to a RT