Deliverable release

Deliverable release for July 15, 2015

Python 3.4 support and better SQLite3 resource usage

What's new:

• Python 3.x support added! Current test platforms are versions 2.7, 3.4, and nightly 3.x releases.
• Geopackage class will now auto-close resources when created in a with statement
• TempDB class will now auto-close resources when created in a with statement
• Mangled all database connection resources in Geopackage and TempDB classes.

Fix incorrect tile matrix width and height values

Matrix height and width values in gpkg_tile_matrix did not reflect actual matrix size in some cases. This release fixes the issue.