Disable HTML escaping across all templates

[geigerj]

Don't think we ever want HTML escaping, and having it on by default causes problems whenever API names contain, e.g., a hyphen.

[codecov-io]

Current coverage is 88.56% (diff: 100%)

Merging #75 into master will not change coverage

@@             master        #75   diff @@
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  Files             3          3          
  Lines           717        717          
  Methods         150        150          
  Messages          0          0          
  Branches        106        106          
==========================================
  Hits            635        635          
  Misses           82         82          
  Partials          0          0          

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[jmuk]

LGTM