Release v1.7.3

Merge pull request #69 from klarna/release_ios_1.7.3

Release v1.7.3

Release v1.7.2

Merge pull request #66 from klarna/release_ios_1.7.2

Release v1.7.2

Release v1.7.1

Merge pull request #65 from klarna/release_ios_1.7.1

Release v.1.7.1

Release v1.7.0

Updated podspec

Ability to open external browser and return back to calling app

Added ability in iOS and Android to return back to calling app.
Set minmal iOS 8.0

v1.2.0

• Ability to switch hybrid webview.
• Polish in-app browser UI.

v1.1.0

• Ability to programmatically close in-app browser.

v1.0.0

• Initial release with UI and consumer experience improvements.