Version 1.2.47

Build on 2018-01-27T02:47:36.0000000Z:
Hack v3.002 : did not modify font binary with font-v to test whether this version string write is leading to problems with hints in binary (for unknown reasons), compilation on Linux with ttfautohint v1.7, Harfbuzz 1.5, FreeType 2.8, ttfautohint flags reverted to -I from -n (Hack issue report source-foundry/Hack#377)