v0.3.0

What's Changed

• Drop JVM target to 8 by @JakeWharton in #10
• Add StringBuilder.appendCodePoint by @JakeWharton in #11
• Add CodePoints.toChars functions by @JakeWharton in #12
• Remove functions provided by the Kotlin stdlib by @JakeWharton in #13

Full Changelog: 0.2.0...0.3.0