Version 0.3

What's Changed

• Update version to 0.3 by @mattleibow in #4
• Update version by @mattleibow in #6
• Merge the assemblies into a single assembly by @mattleibow in #8
• Update README.md by @mattleibow in #5
• Fix Mono.ApiTools.MSBuildTasks.targets by @mattleibow in #7
• We can use "stable preview stable" numbers by @mattleibow in #10
• Fix multiple nested types by @mattleibow in #11
• Handle the special [Obsolete] attributes by @mattleibow in #12

Full Changelog: v0.2.0...v0.3.0