Update ConfigCat.podspec

Bump version

Fix auto poll initial config load from cache (#44)

* Fix initial config load when auto poll enabled with results from cache

* Update AutoPollingTests.swift

Fix custom URL override issue (#43)

Fixing a cache read issue (#42)

* Fixing a cache read issue

* Update CacheTest.swift

Update README.md

Add cache generalization & Snapshots for synchronous support (#37)

* Add cache generalization & Snapshots for synchronous support

* Update ConfigCatClientTests.swift

Deprecate ...Sync() methods (#36)

Use UserDefaults as default cache (#32)

* Use UserDefaults as default cache

* Update ConfigCatClientTests.swift

* Update ConfigCache.swift

* Add getAllValueDetails() (#33)

Update AutoPollingTests.swift