Catch build 22.
Adding Gcov flags in debug mode for Gcc/Clang.
Move to_string to new header.
Make SizedTerm a variadic template class.
Generic lambdas comment.
SizedTerm: static_assert and tests.
Use variadic template version of SizedTerm.
Prepare for Eigen 3.2.0.
Comment in AutoDiffTerm.
IntervalTerm uses variadic templates.