Merge pull request #398 from ebfe/deprecation
update whoami syntax for windows
Merge pull request #399 from Heather/fx1
update deprecated parts of sync
Merge pull request #400 from Heather/master
Fix typo (and macos build?)
Merge pull request #401 from ebfe/typo

Fix typo (and macos build?)
Modify tail to pass some Busybox tests
Merge pull request #402 from Arcterus/tail-busybox

Modify tail to pass some Busybox tests
Fix deprecation warnings