Adding failing testcase for #208 -- fails w/sqlite, passes on postgres
Removing unused converter and fixing test failure.
Special-case logic for aggregations in select queries.
Fix aggregate() to convert data types by default. Fixes #208
Optimizing the ModelQueryResultWrapper after profiling revealed some
issues.
Removing comments
Optimizing generation of join map by traversing join graph at
initialization
Optimizing calls to coerce
Adding a proxy class to wrap things we wish to assign later.  Fixes
Moving proxy into playhouse.  Fixes #210
Update proxy.py
Adding docs on proxy.
Version 2.1.3, including big improvements in performance of
ModelQueryResultWrapper and other fixes.
Fixing apsw test import.
Fixing a bug in the docs.
Use date_part on apsw
Modifying bench get/create
Use more meaningful symbols for operations.
Dynamic field template and adding operators for binary and/or
Starting to work on adding array fields.