matplotlib Code

disable non-functional interactive.py demo: print message and exit.
Otherwise, this demo will hang.

backend_gtk: don't use idle events for draw_rubberband.
Use of idle events for draw_rubberband was a peculiarity of backend_gtk.
When using zoom-to-rect, it often caused a rubberband draw event
to occur after the canvas redraw at the end of the zoom, leaving
the canvas showing the state before the zoom action instead of
showing the result of the action.

[3018198] Fixing the build with clang
Typo in agg causes a template instantiation bug on compilers that actually instantiate everything.

Speed up Gouraud shading in Agg backend.

Clipping to the figure rectangle doesn't work on curves, so turn it off in that case.

Use the more standard term "pop" rather than "flush" for removing the next item from the queue.

[3020704] set_xlim() problem
Bug in PathClipper when vertices fall precisely on the clipping edge.

Standardizing formatting of C/C++ code.

Add unit test to ensure that rendering complexity exceeded exception is properly propagated to Python.

Uses doubles for rectangle clipping everywhere in the Agg backend.