Contributors view will now show commits from the upstream, if one exists
Adds new contributors view options
 - Sorting options
 - Option to show all branches

Updates CHANGELOG

Adds @Shashank-Shastri's contribution
Updates CHANGELOG

Co-authored-by: Shashank-Shastri <shashank.m.shastri@gmail.com>
Co-authored-by: Eric Amodio <eamodio@gmail.com>

Updates CHANGELOG

Co-authored-by: Eric Amodio <eamodio@gmail.com>

Updates CHANGELOG

Updates README

We have Bitbucket on premise, for me it was very hard to find out possible values for GitLens remote type. I think it should be somewhere in documentation.

Co-authored-by: Eric Amodio <eamodio@gmail.com>

Correct "Toggle File Changes Annotations" to match actual command name which is "Toggle File Changes".

Adds advanced.externalDiffTool setting
Adds advanced.externalDirectoryDiffTool setting

eamodio/vscode-gitlens#611 added a setting for commit SHA length,
`gitlens.advanced.abbreviatedShaLength`.

This commit will add `gitlens.advanced.useAbbreviatedShaLengthForCopy`,
which will copy the abbreviated commit SHA instead of the full SHA.
Respects `gitlens.advanced.abbreviatedShaLength`.

Adds @kh0m contribution

Related Issue: #1306

Adds more customization options to Repositories view

And limits it to only affect the welcome experience since showWhatsNewAfterUpgrades already exists