v4.0.0-beta.7

• chore(i18n): update translations (#499) (92588cb), closes #499
• chore(release): 4.0.0-beta.7 (c02e4aa)
• fix(region): Add overflow protection for regions drawn near page edge (#502) (82c4fe7), closes #502
• fix(region): Clear message after submission (#501) (409ea49), closes #501
• fix(regions): Use relative position and size to support dynamic reps (#500) (775d12c), closes #500
• feat(region): Retain annotation message between pages (#498) (f4553f7), closes #498