Upgrade the submodule tidy-html5 to version 5.6 - #22

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prantlf wants to merge 6 commits into

gagern:masterfrom

prantlf:tidy-html5-5.6

Commits on Feb 12, 2018

remove unused build flags in libtidy 5.6
jokester
committed
7739761
build with tidy-html5 v5.6.0
jokester
committed
74d411e

Commits on Feb 25, 2018