Rename ImagePathFilter to PathFilter.

Signed-off-by: Lewis Gunsch <lgunsch@strathcom.com>
Remove Boxed types since they seem unnecessary for now, and add complication.

Signed-off-by: Lewis Gunsch <lgunsch@strathcom.com>
Have PathFilter add_filter_regex return result, rather then panic.

Signed-off-by: Lewis Gunsch <lgunsch@strathcom.com>
Add PathFilter method add_many_filter_regex.

Signed-off-by: Lewis Gunsch <lgunsch@strathcom.com>
Prefer string slices over boxed strings in path filters.

Signed-off-by: Lewis Gunsch <lgunsch@strathcom.com>