profile startup time and faster it

[okayzed]

The time it takes to read the lines of sys.stdin is quiet slow. I've been trying to use generators to avoid that time, but generators + threading isn't working out.

unfortunately - 1,000 commit repository takes about 500ms - 1s to read the commits of at program startup.

[okayzed]

two years later, and I think that the source of slowness is in python's pkg_resources module: urwid/urwid#262

after investigating for a while, it seems like even stubbing out twisted is not enough because pygments relies on pkg_resources as well