feat: add ability to search using a query (#200)

* feat: add ability to search using a query

* Updated Readme with shortcut and on-premise instructions

* chore: fix formatting

feat: Add option to set default branch (#164)

* Add set default branch to Master configuration option

fix: scenario where branchPosition is not in upstream (#162)

Co-authored-by: Alex Schneider <alexanders@twitter.com>

fix(deps): pin dependency @types/mocha to 8.2.0

fix: support valid remote and branch names (#147)

fix: move from yarn to npm (#144)

fix: regenerate lockfile (#143)

ci: migrate to GitHub Actions (#137)

feat: add option to remap URLs before opening (#24)

This adds two options:
sourcegraph.ignoreRemoteHostname: strips the hostname from a git-based
remote. For example, `git@company.com:repo` becomes just `repo` if this
is true
sourcegraph.remoteUrlPrepend: a mapping from string -> string that
allows simple remapping of remote names. If the remote hostname
(user@host) matches the key, the value is prepended to the remote. For
example, if this is `{"git@secondary.company.com": "two/"}, the repo
`git@secondary.company.com:repo` becomes `two/repo`

Fixes #8

fix: handle backslash paths in repoInfo on Windows (#23)