Squashed 'ym-packages/restclient/' content from commit 7c22b1b

git-subtree-dir: ym-packages/restclient
git-subtree-split: 7c22b1bfe2af340f958d7d074e72921386804f6b
Merge commit '80092af4629e17197c82526c9463d0e1c2971b0d' as 'ym-packages/restclient'
ym-packages.log: added restclient