feat: link gofmt as well as go

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
doc: update README to use new syntax

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
feat: fix version fallback to zero better
feat: fix version fallback to zero
feat: support installing latest version
feat: infer PREFIX from install location
fix: properly handle patch version being zero
bugfix: handle nonexistent versions elegantly
feat: support macOS and FreeBSD
docs: record architecture limitation
docs: fix readme format and add examples
docs: fix download URL
feat: add code and license
docs: add README