Improved error handling

RELEASE_6.3.0

Merge remote-tracking branch 'origin/master'

Improved error handling

Merge pull request #26 from IntershopCommunicationsAG/updategradle

Solve some code issues

Update Jira client libs

Merge pull request #23 from vitgorbunov/issue-22

regular JSONException for Task :setIssueField #22

Update and Move to Kotlin

Gradle 6 Support
Kotlin Support

Gradle 6 deprecation removed

Merge pull request #19 from IntershopCommunicationsAG/deprecationremoved

remove Gradle6 deprecation

runOnCi parameter removed

Merge pull request #18 from IntershopCommunicationsAG/runonciremoval

runonci removed

Update Gradle and Dependencies

Update to latest Gradle version (5.6.2)
Update Jira Rest Client to 5.1.6
Remove deprecations of Gradle
Update build configuration to Kotlin script

Update to Gradle 5

Deprecated methods changed for Gradle 5

Update to Gradle 5

Solve issues after update of Gradle.

Create release after update

Merge pull request #14 from IntershopCommunicationsAG/gradle49

Gradle49