Support for custom extensions?

[afk11]

I have a custom extension I wanted to test. I wonder is it in scope for this project to test things not available in PHP? I derived a docker file that would do it, if you wanna see it here:

https://github.com/Bit-Wasp/secp256k1-php/tree/master/travis

I'd be curious what you guys think! Got this working with gcov/lcov and then submit coverage to https://codecov.io/gh/Bit-Wasp/secp256k1-php. It'd be great to get that test harness in all extension repos