affine

Add affine transform.

fixed

• added OLS with fixed points

graph

• update circle
• update conformaltrans
• update plane

unpack

• unpack spreadsheets (*.gnumeric -> *.xml)
• add conformaltrans info (ru).

classic

Classic format:

• helmert3d: Xt = T + s * (X * R).
• distance to plane: Xt = dX * R
• git: reinit spreadsheets

stable

• uniq format tables

PS: git: reinit spreadsheets.