v5.2.0

• chore(release): 5.2.0 (49f39e3)
• chore(release): 5.2.0 (fc793de)
• Revert "chore(release): 5.2.0" (#731) (9156a61), closes #731
• Update .mergify.yml (f4f4933)
• Update .travis.yml (83290df)
• feat(video-annotations): add video drawing annotation support (#729) (3a58987), closes #729
• feat(video-annotations): adding region video annotations support (#730) (bb9997b), closes #730
• feat(video-annotations): introducing media annotator for video annotations (#727) (6886574), closes #727
• feat(video-annotations): updating redux store for video annotations (#728) (5eb6337), closes #728