[primer] new commits pushed by ericprud

The following commits were just pushed by ericprud to https://github.com/shexSpec/primer:

* ~ tweak pre-image intro

[#10] 3 ShEx Essentials
  by Eric Prud'hommeaux
https://github.com/shexSpec/primer/commit/400dcd45554f6c7e92fcf4bf9576dbc2849f54b5

Received on Saturday, 2 December 2017 11:24:37 UTC