more tests and a null check for batch options
test that error is throw when location isn't a string
Add test for iterator limit=0
Merge pull request #33 from watson/no-no-limit

Add test for iterator limit=0
remove options.start hackery
Merge pull request #34 from rvagg/what-even

remove options.start hackery
Merge pull request #25 from calvinmetcalf/batch-tests

Batch tests
1.0.0
allow empty values
fix null refs
allow undefined too
print error
fix tests and impl for null/undefined values
Merge pull request #35 from rvagg/julian-empty-values

Allow empty values
2.0.0
update