twitter: Update API url.
unix.linux.proc: Add a parser for some of the /proc and /proc/[PID]/ files.
unix.ffi: Add the man 2 signal() function call.
debugger.unix: Get the signal name from a signal object too.
debugger.unix: Make this vocab unix only.
io.backend.unix: Nobody uses (refill), remove it.
math.statistics: Add docs for collect-by and collect-index-by.
rosetta-code.top-rank: Use collect-by instead of defining it as group-by.
math.statistics: adding z-score.
maze: Refactor to use fry + replicate.
colors: Inline >rgba methods.
benchmark.timers: adding a timer benchmark.
timers: use typed to speedup 10%.