Log Message:
Update to 0.33

Changes:

- Text gradients get double href and thus are built again and again
- Fix rendering of gradients with global opacity
- Make export dialog honour filename
- Make internal canvas position floating-point
- Split ::Modified and ::Update flags in SPObject
- Fix zooming into scaled text
- Baseline-shift and spacing properties
- Does export create namedview views that are not destroyed?
- Star::Build does not work for non-sodipodi objects