WIP: extract vim sync code out of merlin.py
WIP: extract vim sync code out of merlin.py

dra27/merlin,ocaml/merlin,chambart/merlin,chriskonstad/merlin,dra27/merlin,fxfactorial/merlin,rgrinberg/merlin,haselwarter/merlin,rgrinberg/merlin,chambart/merlin,rgrinberg/merlin,dra27/merlin,neojski/merlin,rgrinberg/merlin,the-lambda-church/merlin,chambart/merlin,haselwarter/merlin,ocaml/merlin,chriskonstad/merlin,ocaml/merlin,dra27/merlin,neojski/merlin,chambart/merlin,haselwarter/merlin,fxfactorial/merlin,ocaml/merlin,neojski/merlin,the-lambda-church/merlin,fxfactorial/merlin,fxfactorial/merlin,haselwarter/merlin,the-lambda-church/merlin,neojski/merlin