* Add the `clear` command to the help * Update the `drop` command to indicate that multiple branch IDs can be passed as arguments Looks like I forgot to update the help when I made those changes.
When the current directory was not the Git root, the command wouldn't work. It expected to find the branch list database in the `.git` directory in the current directory. Make the program work even if the current directory is a subdirectory of the Git repository.
Previously, if a branch name had slashes in it, the `drop` command would fail. This is because it used `sed` with `/` separators, and the unescaped slashes in the branch name would mess up sed's pattern. Change this to use grep instead of sed so we don't have to worry about escaping and special characters in branch names.