Merge pull request #237 from cabanier/reproject-depth

update occlusion page to allow browser based reprojection

Merge pull request #236 from cabanier/tracked-sources

Make tracked-sources optional

Merge pull request #234 from mutantdeveloper/support-texture-array

remove unintended change

Support texture-array in projection layer sample

Render PlaneMaterials DoubleSide (#232)

Allow Anchor poses to be null

fix shader error in roomscale sample

Merge pull request #223 from cabanier/control-depth

address review comment

add test to pause/resume depth

closes #219, fixed default branch name in links

Merge pull request #222 from cabanier/canvas