Merge pull request #5 from Matt-Esch/master

update vdom & vtree to v0.0.14
2.1.0
add docs.mli
throw exception if update whilst render. cc @nrw
2.1.1
Update package.json
Merge pull request #6 from ntran13/patch-1

missing `error` dependency
updated deps
2.1.2
Merge pull request #7 from Matt-Esch/master

update vdom & vtree to v0.0.15
2.2.0
update vdom vtree deps