Bump version to 1.9.4

[a3f]

No description provided.

[raysan5]

Ouch! I miss that! Should I launch a new release? I can cancel previous one...

[a3f]

I think that would be the best, to avoid confusion as this release has the version embedded in the libraries and the pkg-config files. I am in favor of a 1.9.4-dev (To avoid breaking people who have pulled 1.9.3-dev already…), Should I push a 1.9.4?

[raysan5]

Should I push a 1.9.4?

Sure. I'm also changing it in raylib internals and integrating to master again.

[raysan5]

Just as a note, we should find a way to automatically pick version from somewhere instead of changing version number text manually inside raylib.

[a3f]

Suggestion: Check if git is available and use git describe --tags. This returns 1.9.3-dev on master. If there are commits since the tag, it appends a commit id after the tag, e.g. 1.9.3-dev-1-g0edaecf. Pass it as RAYLIB_VERSION macro to build process. If there's no git, we'll have to use a hardcoded value as fallback.