Log Message:
Github CLI: update to 1.0.0.

Features

- Add gh release commands for managing GitHub Releases
- Add gh pr checks command
- Add gh gist list/view/edit commands
- Improve resolving the base repository for all commands
- Additionally, gh pr create now prompts for where to push the current branch,
  including an option to create a fork, instead of trying to guess the head
  repository or automatically fork in the background.
- Add gh pr create --head <branch> flag to explicitly set the head branch for
  automation and opt out of any forking/pushing functionality.
- Add gh config set prompt disabled config setting
- Add gh help environment help topic listing all supported environment
  variables
- Add support for PAGER environment variable to enable a terminal pager program
  such as less, also supported through the pager config option
- Add gh auth login --web flag

Bugs

- pr merge --squash: add pull request title to the commit subject
- pr create: prepend body defaults to the selected template
- repo view: do not HTML-escape output
- issue list: fix misalignment due to Unicode and emoji characters
- Fix terminal color display under various color schemes
- Fix zsh completion script
- Fix opening the web browser under WSL