Summer of Code project ideas

last years gsoc

Change postscript output to use the same mechanism as PDF and SVG, which
allows text to be editable after export.
Related issues: #131, #11233
- Font fallback in matplotlib. Use css-font fallback ideology to let user
  provide a list of (already-present) fonts (for non-shipped fonts, refer to 3rd idea),
  and render text-first route instead of font-first route. (a bit of surgery req.)
Related issues: #18883, #15260
- Font subsetting in matplotlib. Currently all the PDFs and SVGs generated embed the entire font within them, subsetting is a way to just embed the glyphs required from the font files.
- Related issues: #12636

Allow mathtext in matplotlib to use user-provided font. There are 2 ways to go about this:
- (good) Add lualatex/xeetex like backends to work with extended DVI parser
- (better) Add support to take font paths from user.(this will most probably require a working font-fallback idea, and may be taken as an extended goal for GSoC)
- Related issues: #2869

we currently rely on Agg to do image interpolation and resampling. This has pretty signifcant limitations as Agg only works on numbers between 0 and 1.
project would consider re-implemmenting the sampling in python (numpy or using other image manipulation libraries) and/or our own C code.
scope:
- well-defined as we have "working" implimentation to test against.
- could be partial (i.e. just impliment some of the more popular interpolation routines, and track to those when possible, and the old routines when not)