Fix casting of hstore text to date
Merge pull request #39 from steventlamb/bug/fix_hstore_date_casting

Fix casting of hstore text to date
Change mapFeature->plot in udfc query syntax

This was primarily done to make the django portions, client and server, more flexible. UDFCs are handled generically on the tiler, but the side sending the request is specific to plot, so it makes sense to send the query as "udf:plot" instead of "udf:mapFeature". If we start adding support for UDFCs on other mapFeatures, we need only add another rule to this config.
Merge pull request #40 from steventlamb/topic/remove_mapFeature_from_udfc_syntax

Change mapFeature->plot in udfc query syntax
Update to version 19.4 of windshaft

... to resolve "npm install" issues. There's a version 20.0, but 19.4 seems a safer bet.
Merge pull request #41 from RickMohr/update-windshaft

Update to version 19.4 of windshaft
Make debugging easier by not forking when in debug mode
Convert boolean values to SQL literal TRUE or FALSE
Merge pull request #42 from maurizi/fix/boolean-queries

Fix queries using boolean literals
Merge pull request #43 from maurizi/fix/boolean-queries

Fix queries using boolean literals
Merge pull request #44 from OpenTreeMap/release

Merge pull request #43 from maurizi/fix/boolean-queries
Switch from searching for treePhotos to mapFeaturePhotos
Merge pull request #45 from maurizi/map-feature-photos

Switch from searching for treePhotos to mapFeaturePhotos
Performance improvements
Merge pull request #46 from RickMohr/improve-performance

Performance improvements
Add support for querying multiple UDF collections at once.

The client must wrap the JSON objects for UDFCs in an ["OR", ...]
combinator, as we can't query for matches on multiple UDFC types for the
same row.

One note, in order to add the tree joins to the query only when necessary, the
"udf:plot" and "udf:tree" SQL are both empty, and depend on "udf".
This introduces some extra whitespace characters in the query, but doesn't hurt
anything.
Merge pull request #50 from maurizi/fixes-foralerts-search

Add support for querying multiple UDF collections at once.
Fix scalar UDF searching.

Fixes #51
Merge pull request #52 from maurizi/scalar-udf-searches

Fix scalar UDF searching.
Add support for Travis CI.