Squashed 'helpers/' changes from 20319fc..338ad98
Squashed 'helpers/' changes from 20319fc..338ad98

338ad98 Merge branch 'feature/VFS-1222-helpers-promisess-to-callbacks-2' of ssh://git.plgrid.pl:7999/vfs/helpers into feature/VFS-1222-helpers-promisess-to-callbacks-2
e3b2794 VFS-1222 test compile

git-subtree-dir: helpers
git-subtree-split: 338ad987492bb37f87fb3f67bd6da94f8cc3189a

onedata/cluster-worker,onedata/cluster-worker,onedata/op-worker,onedata/op-worker,onedata/op-worker