* Replaces stew-results with results package
* Applies leveldb batch-put
* links in dispose call to leveldb wrapper
* Handles trailing wildcards in leveldb query.
* Fixes tests for leveldb typed-ds.
* Adjusts exception handling in leveldbds to match what can be raised by leveldb iterator callbacks.
* Pulls in leveldbstatic 0.1.4
* Replaces replace with substring in leveldbds query
* Adds cmake to windows CI install
Don't build with Nim v1.4, building with v1.2 and v1.6 should be enough.
Don't manually run `brew update` because `brew` will automatically do that on
an as-needed basis when running `brew install`.
