Update CHANGELOG.md

Merge pull request zenangst#792 from hyperoslo/implement/size-cache-f…

…or-ios

Populate sizeCache on iOS

Merge pull request zenangst#789 from hyperoslo/fix/focused-item-index…

…-bug

Set focused item index to zero if index is nil when updating the delegates

Merge pull request zenangst#788 from hyperoslo/remove/unwanted-print

Remove unwanted print statement

Bump version to 7.4.0

Bump version to 7.3.0

Bump version to 7.2.1

Bump version to 7.2.0

Update Spots.podspec

Bump the build number