v4.0.0-beta.6

• chore(i18n): update translations (#493) (f8e2a0d), closes #493
• chore(i18n): update translations (#497) (725cac5), closes #497
• chore(release): 4.0.0-beta.6 (36276d0)
• fix(reply): Fix editor focus causes jumping to page top (#487) (bbed3f4), closes #487
• fix(scroll): Fix scroll-to-annotation behavior if page isn't rendered (#495) (f23d2ba), closes #495
• feat(delete): add delete annotation flow (#486) (d5fdb47), closes #486
• feat(permissions): Add permissions object to annotations api calls (#489) (54d1b8b), closes #489
• feat(popupreply): Add Comment validation with Formik (#491) (aa5b709), closes #491
• feat(region): Add cursor tooltip (#488) (7703715), closes #488
• feat(reply): Integrate collaborators endpoint (#484) (619e7be), closes #484
• feat(reply): Restore @mentions entities from plain text (#494) (1a4d879), closes #494
• refactor(region): Use buttons for better borders and drop shadows (#496) (fcdbca9), closes #496
• perf(region): Refactor creator to modify rect directly during draw (#490) (a838a9e), closes #490