v0.11.7

• Improve: -C is used instead of --git-dir for executing git commands to avoid weird gitdir issue on Windows
• Improve: ?expand=1 is added to 'Create pull request' page when opening a repository with --pr and a pull request is not yet created. It opens a text form for pull request description automatically
• Improve: Dependencies were updated
• Fix: Setting empty string to $https_proxy did not work
• Dev: CI for Windows was fixed. It failed due to weird reason
• Dev: Use std::error::Error trait to handle nested errors