Rom

[fixed] In some cases, columns with keygens that didn't generate an index
entry would not have its column data saved. Thanks to github user
https://github.com/slorg1 for the bug report and 95% of the solution.

[added] test for recursive ManyToOne/OneToMany relationships, information:
https://github.com/josiahcarlson/rom/issues/78#issuecomment-249451280
[added] docs for index types and their semantics, information available in the
documentation for `rom.column`:
https://pythonhosted.org/rom/rom.html#rom.Column
[added] Lock and EntityLock objects to rom.util, for access to locks with the
implementation/semantics I like.
[fixed] Made JSON column serialization deterministic to fix race condition
check. Thanks to Github user https://github.com/bparker98 for the bug
report and recommended fix.

[fixed] make sure that index data is valid before writing. Bug report and PR
thanks to Github user https://github.com/LuisUrrutia

[fixed] query objects will now lowercase queries against FULL_TEXT indexes, as
the index is case-insensitive already. Thanks to Github user
https://github.com/slorg1

[added] geo index and 'near' query option backed by Redis 3.2's GEOADD and
GEORADIUS operations. Feature request thanks to Github user
https://github.com/peter-conalgo

[changed] Lua is now requried for rom 0.36.0 and later
[fixed] Lua string.format() is not binary safe, and has been silently
corrupting portions of index values for years. This has been fixed, but
you need to rebuild your indexes. Discovered in February, but delayed
until other changes came through.
[changed] filter speed estimation improved substantially, and queries with
numeric range searches can be hundreds of times faster than before.
[removed] unnecessary recursive calls inside session-based entity saving.