Refactor fix_lshift
Refactor fix_rshift
Fix indent in bit_coerce
Merge pull request #2056 from suzukaze/fix-indent

Fix indent in bit_coerce
Merge branch 'Refactor-numeric.c' of https://github.com/suzukaze/mruby into suzukaze-Refactor-numeric.c
avoid function style parens after "return"; ref #2055
Merge branch 'master' of github.com:mruby/mruby
add kh_push2() to check if entry is added
use kh_put2 in mrb_hash_set for performance improvement
use quadratic probing in khash.h
disable fragile bintest on travis-ci