Treestamps

- Fix

- Factory consuming child timestamps when given files not directories.
- Loading and dumping timestamps not related to the treestamp dir.

- Features
- Ignore symlinks option.

- Fix
- Support ignore in factory

- Features
- Support ignore globs

- Fixes
- Protect final dump yaml from child cleanup task.

- Features

- Colored output.

- Fixes

- Trap more errors when reading timestamps

- Fixes
- Fix strings submitted to factory instead of paths