replace from `?at` to `/` for `providerBranchRef`

Fix suffix with `=` in it

Document flags to git-open

Detect WSL case insensitively

My `uname -r` is `4.19.81-microsoft-standard`

Add suffix flag

Co-authored-by: Sowmiya <[email protected]>

Add a --commit option

I've only tested this with gitlab seeing as I needed it there. If this could be useful I can integrate any feedback you might have to get this proposal merged.

Add option to print the url

default to upstream branch

Remove openopt, allow spaces in $BROWSER

Remove the openopt variable, instead opting to allow spaces in `$BROWSER`.

`$BROWSER` as used by the XDG implementation allows spaces (and `%s`
printf-style formatting strings), and is actually a PATH-style list.
While this patch doesn't make git-open compliant with the XDG-style
variable, it does allow for the use of `BROWSER="powershell.exe
Start"` in the environment.

Support opening current tag / commit

Fixes #89.
Fixes #129.

Supports AWS Code Commit.

Added support for AWS Code commit.

Fix issue #121 - incompatability with bash < 4