Improve error messages

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Fix detection of tap assignment (close #89)

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Wrap lines based on trailing comma (close #74)

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Fix hover hint for getter fields

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Add initial unit tests for script and config formatting

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Preserve backslash escape in formatting of string literal

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Exclude rootless workspace from initialize progress

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Add unit tests

Signed-off-by: Ben Sherman <bentshermann@gmail.com>