v0.21.0

What's Changed

• Refine JDK installation instructions in README by @DanielThomas in #50
• Move documentation to Wiki by @DanielThomas in #51
• Move installation details to wiki by @DanielThomas in #52
• Create GitHub release after publication by @DanielThomas in #57
• Improve installer experience by @DanielThomas in #56
• Centralize access-aware tool invocation by @DanielThomas in #59

Full Changelog: v0.20.4...v0.21.0