Request: bugfix release of webkit2gtk-sys 0.15.x

[birkenfeld]

The 0.15 series is the last to work with the 2018 edition, which some of us will have to stay on for a while...

In webkit2gtk-sys 0.15.1, lib.rs has the following line: https://github.com/tauri-apps/webkit2gtk-rs/blob/webkit2gtk-sys-v0.15.1/webkit2gtk-sys/src/lib.rs#L20

which references javascriptcore_sys instead of the correct javascriptcore_rs_sys.

This is such a small fix, could a patch release be made to fix this? Thanks!