Symbols taken from https://github.com/powerline/fontpatcher/blob/develop/fonts/powerline-symbols.sfd
The original symbols use height and widith of approx 1060x2048, so I
modified to be roughly 1000x1000 via:
fontforge -lang=ff -c 'Open($1); SelectAll(); UnlinkReference(); Scale(100, 50); Move(0, 300); Export("svg/%n-%e.svg");' powerline-symbols.sfd
Then I edited by hand to round values to approx 2 significant digits,
and then used a script to convert relative SVG commands such as 'l',
'c', 's' to use only 'M', 'L' and 'C' and used expected format with
comma separators rather than spaces, and divide all values by 1000 to
map into a 1x1 space.