Make reqd changes for basic maps. New chart type, new transforms, update html form, change default chart size
Add map example
Add data binding pieces for choropleth maps
Add tests for Maps, serialize domain data and keypair data
TopoJSON and geo projections for test, copy().keys() for Py3
Update examples and explicit list cast for Py3
Change order of data serialization, patch up map examples, move map data into dedicated repo
Fix example
Update docs and README
Merge pull request #62 from wrobstory/PR_Maps

PR_Maps