Implement most of chmod
cut: fix deprecation warnings
Merge pull request #429 from Arcterus/fix-master

cut: fix deprecation warnings
Update README.md
nproc: support --all and --ignore and respect OMP_NUM_THREADS
Merge pull request #428 from Arcterus/chmod

Implement most of chmod
Merge pull request #430 from Arcterus/nproc

nproc: support --all and --ignore and respect OMP_NUM_THREADS
MV implementation

Support for all commandline options except one, see src/mv/mv.rs

Many tests, included a todo list of more tests too, see tests/mv.rs
Merge pull request #427 from awestroke/feature_mv

MV implementation