[cairo] Missing const on set_dash()? [cairomm]

[Ian Britten]

Hi all,
Am I correct that the first parameter to Cairo::Context::set_dash()
should be const?  And that cairomm copies the input, and doesn't
modify the parameter?
http://cairographics.org/documentation/cairomm/reference/classCairo_1_1Context.html#de74abb6db86a97ff3800e431e27ba45

Assuming "yes", I don't know if it can be changed at this point, or
if that'd be a problematic ABI change, but I'd vote to change it...

Thanks,
Ian