v1.3.0

What's Changed

• docs: document workflow approve and view --json in commands/examples by @pradyb in #33
• fix(workflow): change approve --environment shorthand from -E to -e by @pradyb in #35
• docs: add an Upgrading section to installation.md by @pradyb in #36
• feat: check for a newer release at startup by @pradyb in #39
• docs: combine chmod+mv into one install step by @pradyb in #40
• feat!: move main.go to cmd/sgh so go install produces the sgh binary directly by @pradyb in #41
• chore: cut CHANGELOG for v2.0.0 by @pradyb in #43
• docs: correct unbuilt-binary version defaults (1.0.0/Beta, not dev) by @pradyb in #44
• chore: cut CHANGELOG for v1.3.0 (supersedes v2.0.0) by @pradyb in #45

Full Changelog: v1.2.0...v1.3.0