Refactor SciDBArray to use AFL for queries
Refactor SciDBInterface to use AFL
Add some remaining AFL operators/functions to afl module
Merge pull request #24 from ChrisBeaumont/afl-refactor

AFL refactor
Remove deprecated AFL Count operator
Merge pull request #25 from ChrisBeaumont/master

Replace AFL Count
Early detection of bad SciDBShimInterface urls

Closes #20
linting, PEP8
Rename get_interface -> connect, to mimic other array interfaces
Histogram function
Document histogram
Merge pull request #27 from ChrisBeaumont/cleanup

Cosmetic fixes
Fixes for SciDB14 Compatibility
Merge pull request #31 from ChrisBeaumont/v14

SciDB v14 Compatibility
Reap non-persistent arrays atexit, and after context managers.

Remove attempt at tying __del__ to database deletion, since there
appears to be no reliable way to attach events to garbage collection.

Fixes #16
Raise exception when reaping persistent arrays