fix build
un-feature-gated if let
updated gcc dependency
Merge pull request #317 from pfalabella/breakages-p

fix fallout of changes to mutex/condvar and stdio
added bulls and cows
feedback
Merge pull request #318 from pfalabella/bullscows

added bulls and cows
fix infinite loop
Merge pull request #319 from chenyukang/fix_infinite_loop

fix infinite loop
Add command line args (taken from rossetacode.org)
Copy is now opt-in
Merge pull request #323 from pfalabella/daily-13

Copy is now opt-in
unboxed closures, proc() removal
a few more procs
Merge pull request #324 from pfalabella/breakage_15

unboxed closures, proc() removal
fallout of new ops traits on num::BigUint
Merge pull request #326 from pfalabella/breakage_16

new day, new breakage :)
Merge pull request #321 from aochagavia/cmd-args

Add command line args (taken from rossetacode.org)