Upgrading to 1.7.1

Summary of changes since 1.7.0:
* Removed dependency on the VSCode Git extension
* Request log streaming in the Logs View UI
* Adding API reference support for all langs except .NET
* Adding snippet support for all langs
* Localized timestamps
* Migrated to use ThemeIcon from VSCode

Upgrading to 1.7.0 (stripe#148)

Update version to 0.5.1

Merge pull request stripe#119 from stripe/update-deps

Update deps to address npm audit vulnerabilities.