Support gradle 6
Created by: sunnylqm
Gradle 6 now requiring the Kotlin plugin to be version 1.3.50 or higher. https://docs.gradle.org/6.0-rc-3/userguide/upgrading_version_5.html#kotlin_dsl_ide_support_now_requires_kotlin_intellij_plugin_1_3_50
Created by: sunnylqm
Gradle 6 now requiring the Kotlin plugin to be version 1.3.50 or higher. https://docs.gradle.org/6.0-rc-3/userguide/upgrading_version_5.html#kotlin_dsl_ide_support_now_requires_kotlin_intellij_plugin_1_3_50