1f8e4ec5

By: Tom Sydney Kerckhove <syd@cs-syd.eu>

Default skip-th-splices to True

Real-world codebases (Yesod widgetFile, Persistent persistLowerCase, route
generation, lens TH, ...) make TH splices the common case rather than the
exception.  Mutations inside expanded splices almost never correspond to
something a test can kill, so they dominate the report with spurious
timeouts/survivors that hide the real surviving mutations.

Callers who specifically want mutations inside TH splices can still set
'skipThSplices = false' explicitly in the plugin config.