Log Message:
devel/ruby-highline: update to 2.0.2

### 2.0.2 / 2019-04-08
* PR #243 - Add new capital_letter option to menu index (@Ana06)
  * This is a really special PR. It has come from "The Biggest
    Mobprogramming Session Ever" and around 250 people
    participated in crafting it!
* PR #241 - CI: Add 2.6 (@olleolleolle)
* PR #240 - Avoid YARD warning UnknownParam (@olleolleolle)