Fix/utils (#22)

* Fixed Random Number Generator

* Updated Dependencies & Idea Files

* Updated Changelog

Updated Build Script & Dependencies

Updated Build Script

Update build.gradle

Fixes and Added GitHub Packages

GitHub Packages & Gradle Wrapper Validator

* Now packages will be uploaded to github and our own repo
* Gradle Wrapper will be automatically validated

Added v5.3.1 Changeling

Fixed BrowserGui Search (#17)

Deprecated SimpleItem#setOwner

Update CHANGELOG.md