Bump version from 0.1.4a20151203 to 0.1.4.
Bump version from 0.1.4a20151203 to 0.1.4.

* Corrected an error in calculating correlation.
* Now depends officially on sqlite 3.8.0 and apsw. The change to apsw was blocking many language features. It seems we were already depending (undeclared) on a newer sqlite for partial indices.

probcomp/bayeslite,probcomp/bayeslite