Release Name: 1.11

Notes:
A new release with a few new features - more control on axes, and a new function for monotonic interpolation.


Changes:
Straight from the Tioga_README file:

    Version 1.11 brings in a few new features. First, it is now
possible to set the color of axis tick labels - if you love pink axes,
you can them fully in Pink, now ;-) ! Check out the
x/yaxis_labels_color= accessors. The show_axis/axis_info functions
have been updated accordingly, and are now complete.

    Second, a new interpolation function for monotonic interpolations
has been added to Dvector (check out the Sampled_pm_cubics sample in
samples/plots/plots.rb).