Bump version: v0.25.9 Dubnium 2018-12-30

Bump version: v0.25.8 Dubnium 2018-12-04

Bump version: v0.25.7 Dubnium 2018-12-03

Bump version: v0.25.6 Dubnium 2018-12-02

Bump version: v0.25.5 Dubnium 2018-11-29

Bump version: v0.25.4 Dubnium 2018-11-11

Improve speed of bool-to-int conversions (elliotchance#796)

Use a simple function that tests the bool and returns 0 for false and 1 for true, rather than a map that does the same thing, as Go appears to compile the former into much faster code.

Bump version: v0.25.2 Dubnium 2018-06-29

Bump version: v0.25.1 Dubnium 2018-06-27

Bump version: v0.25.0 Dubnium 2018-06-26