Introduce a test for `cp'.
Merge pull request #419 from jaysh/cp-tests

Introduce a test for `cp'.
test: fix -a and -o by using operator precedence
Merge pull request #414 from Arcterus/test-fix

test: fix -a and -o
basic byte and numeric sort
tests for numeric sort
Merge pull request #421 from yincrash/yin_sort_rebased

basic byte and numeric sort rebased and squashed
move_util
Merge pull request #420 from skv-headless/move_util

move utility
Get rid of warnings
Merge pull request #422 from Arcterus/die-warnings-die

Get rid of warnings
test: add some tests for -a and -o
Merge pull request #423 from Arcterus/test-tests

test: add some tests for -a and -o
Drop BigInt support from test