V1.12.1

• Fixed #565, thanks @AlexKrupa
• Reorganized tests to reflect the real feature they test rather than the number of the GitHub issue, thanks @drazen04, @fejd, @polarene
• Converted most of the build.gradle files to kotlin, thanks @geekiyer, @vasanthdharmaraj, @fejd, @DeKaN
• Fixed a wrong behavior with unmockkAll inside the MockKExtension, thanks @gmazzo
• Improved support for verification stack traces, thanks @kkurczewski