ci-phpunit-test for CodeIgniter 3.0

v0.6.1 was released! (v0.6.0 was canceled because of trivial documentation mistakes)

https://github.com/kenjis/ci-phpunit-test/releases

This version has two new monkey patchers:
* Patching Functions
* Patching Methods in User-defined Classes

And added `$this->resetInstance()` method for better model testing.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper