- slightly improve precision of all schemes
- more consistent scheme selection for P3, W3 domains
- don't include zero weights in schemes
- remove 0 weights from some multidimensional schemes
- various code improvements
- new logo
- Add Takaki-Forbes-Rolland schemes for S2
- Add Van Zandt schemes for E2r2, E3r2, S3
- improved command-line interface: list schemes, show info, plot