Shader Minifier 1.3.1

What's Changed

Main changes include:

• Support "precision" statements by @laurentlb in #161
• Aggro-inlining: don't inline variables with a prefix ++ or -- operator by @laurentlb in #164
• Fix stackoverflow error in simplifyExpr by @laurentlb in #165

Full Changelog: 1.3...1.3.1