Release v0.10.9

[zach2good]

Targetting release-v0.10.9 (new) from zt_v0.10.9 (new)

Cherry-picking:

• https://github.com/mapbox/mapbox-events-ios/pull/297
• https://github.com/mapbox/mapbox-events-ios/pull/296
• https://github.com/mapbox/mapbox-events-ios/pull/294
• https://github.com/mapbox/mapbox-events-ios/pull/288
• https://github.com/mapbox/mapbox-events-ios/pull/281
• https://github.com/mapbox/mapbox-events-ios/pull/280