* Try to get CI to work
* update to xcode that exists
* Use a more recent sim; update podfiles not to use github as source
* fix clang 10 error about 10 being extern
* don’t override deprecated method
* Fix tests and snapshot tests
- Update all the tests identifiers in code to use `_` instead of `-`.
-- Rename all the reference images with `_` instead of `-`.
-- The above two changes are in preparation for iOSSnapshotTestsCase doing this for us.
- Move all the reference images in the path "ReferenceImages_iOS_10" to "ReferenceImages_64".
-- When copying these reference images, prefer the iOS10 reference images since we now run under iOS10.
-- The exception is testRoundedCornerBlock where we prefer the 64 one.
-- Remove "_iOS_10" as a suffix in code.
Co-authored-by: Rahul Malik <rmalik@pinterest.com>