Bump version to 0.15.0

Bump version to 0.14.1

Bump version to 0.14.0

Add Package.swift, Support SPM

Bump version to 0.13.1

Bump version to 0.13.0

Bump version to 0.12.2

Bump version to 0.12.1

Bump version to 0.12.0

Hotfix: use .swift-version for cocoapods

Bump version to 0.11.1

Reference:
c047d00
Bump version to 0.11.0