This release includes a few bug fixes and a significant code cleanup in an ongoing effort to make this codebase much healthier. Primary changes:

• BREAKING CHANGE: Removed the coerce_types param from QuerySet.as_pymongo #1549
• POTENTIAL BREAKING CHANGE: Made EmbeddedDocument not hashable by default #1528
• Improved code quality #1531, #1540, #1541, #1547