Merge pull request #244 from blankiito/0.8.8-Stable

Add setFire and breakBlocks parameters for the explode command
Add fully-featured Firework command. Example usage: - firework power:2 type:star primary:red|orange|yellow fade:blue|teal flicker trail
Rename <util.trim> tag into <util.substr> to clarify that it crops chosen text instead of removing it. Add <util.substr[text].after[text]> su
Merge pull request #3 from aufdemrand/0.8.8-Stable

Merge for fireworks