1.9.0

What's Changed

• build(release): update version to 1.8.0 by @JeremiahSanders in #167
• feat: add meta cienv variables commands by @JeremiahSanders in #169
• fix: stop encoding html-sensitive characters in serialized metadata by @JeremiahSanders in #170
• task: use shared manipulation code while handling meta version bump by @JeremiahSanders in #171
• task: update copyright year in csproj by @JeremiahSanders in #172
• task: update languageext to 4.4.0 and extras to 0.6.0 by @JeremiahSanders in #173
• task: update system.commandline to 2.0b4 by @JeremiahSanders in #174

Full Changelog: 1.8.0...1.9.0