iOS 15 compatibility fixes

Merge pull request #214 from diegostamigni/master

Support for disabling keyboard show/hide handling in ASTableView

V2: Merge pull request #199 from apptekstudios/v1.8.0WIP

V2

1.7.1 (#153)

- Workaround for SwiftUI bug (viewDidAppear not being called inside scrollView)

V1.7.0 (#150)

- Add support for setting scrollPosition through binding
- Improve function builders, support for unlimited number of static views, support for arrays
- Improve default self-sizing settings
- Support for automatic keyboard avoidance

Update ASCollectionView-SwiftUI.podspec

V1.6.2 (#141)

* Attach views in layoutSubviews (as apple does in some of their UI), fixes #130

V1.6.1 (#140)

* Further refinement of cell lifecycle

* Workaround UICollectionViewCell bug

* Fix for animating layoutChange when `shouldInvalidateLayoutOnStateChange` is enabled

Merge pull request #139 from apptekstudios/v1.6candidate

V1.6