v0.5.0

What's Changed

• fix: add InvariantStatement by @CodyJasonBennett in #28
• feat: GLSL ES 3.1 support by @CodyJasonBennett in #29
• fix(minifier): don't use reserved words for mangled identifiers by @CodyJasonBennett in #30

Full Changelog: v0.4.1...v0.5.0