Midieditor built with xmake and msvc

• use xmake as default build tool. Xmake packs qmake, script, and git submodule into one program. Feedback is welcomed.
• embed metronome click sound into qrc.

Full Changelog: 3.4.0...3.4.1

ProMidiedit 3.4.0

Features

• add new display style for background;
• add localization support
• add tempo editor

Notice

Linux release is not provided yet.Please report any problem at this repo.