[update] pod version

[update] swift-version file

Merge pull request #120 from Yalantis/bugfix/rk-08-01

Bugfix/rk 08 01

Merge pull request #115 from Yalantis/feature/swift4-2

Feature/swift4 2

Merge pull request #96 from Yalantis/srj-20.06.18-bugfix

[Fix] #94

[Change] pod spec version