Support Text on Path

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I just downloaded svgfig today, so maybe what I'm asking can already be
done, sorry if that's the case. (And thanks for creating svgfig!!)

What steps will reproduce the problem?
1. Create a text: tbox = Text(1.5, 0.5, "hello")
2. Transform the text: Fig(Fig(tbox, trans="x*cos(y), x*sin(y)")).SVG(...)

What is the expected output? What do you see instead?
I expected the text to be transformed too, but the text was nice and
horizontal.

What version of the product are you using? On what operating system?
1.1.6 (windows)

Please provide any additional information below:

I can understand why transforming text could be troublesome, however, it
would be enough for svgfig to support text on path. I'm thinking on
creating a "Line" and use that as a path. If the Line gets transformed, I
guess the text will be rendered following said transformed line.

Original issue reported on code.google.com by [email protected] on 12 Jun 2008 at 1:40