Merge pull request #148 from jwass/geocoding_tools

Move geocode.py to tools/geocoding.py
Add explode() and collect() functions

explode() expands multi-part geometries into multiple rows, and into
their single part geometries.

collect() and take multiple single geometries and combine them into their
Multi* counterparts.
Add tests for collect()
Merge pull request #146 from jwass/explode_collect

Explode collect
Install libgdal1h from ubuntugis ppa on Travis CI
TST: Lock geopy version ==0.99
TST: Disable pandas master tests for python 2.6 and 3.2
Revert "TST: Disable pandas master tests..."

This reverts commit 95d2e20fe59af0ace72c3ab2faef1e0157a4735e.
BUG/TST: Fix tests - don't do math on Index

Treat Index objects as set-like. Convert to Series before doing
arithmetic. This broke when Pandas Index no longer subclassed from
NDArray.
Merge pull request #157 from jwass/fix_travis

Fix tests
First commit of osm import

Still some more work to do.
Add an IPython notebook for osm module.