inchilib: dont manually hold persistent<fn>
deps: add sdf files incorrectly excluded
deps: add sdf files incorrectly excluded
test: slow tests
inchilib: add locking to serialize access to inchi
meta: ignore sdf files only under build/
build: add inchi_lock.cc
inchi: add guards to addBond, new unguarded fn _addBond
inchi: use unguarded _addBond in fromInchi
inchi: pass inchikey as 3rd argument to callback
meta: updated dependencies
inchilib: calculate inchikey even if warning
inchilib: add type checking to Molecule_wrap
inchilib: correct comment
add test fixtures
inchilib: add inchi_lock header
build: add slow tests, run on prepublish
inchilib: protect intermediate values from gc
inchilib: use Handle<> instead of Local<> for callback args
inchi: factor out fn to build Molecule from molfile