Added argument parsers
Argument parsers
Test argument parsers
Recursive arguments
Added many new arguments
New arguments, started refilling command.hpp
Implemented optimization algorithms and various samplers, added appropriate arguments
reducing number of 'expensive operations' in fvar
clean up matrix inverse for fvar
testing fvar functions
added fvar<var> and fvar<fvar<T> > tests for abs, acos, acosh, asin, asinh, atan2, atan
fixed spacing in fvar functions between ) and {
replaced x * x with square(x) in fvar
removed extra test files
added fvar<fvar<T>> and fvar<var> tests for atanh
added fvar<var> and fvar<fvar<T>> tests to ceil and cbrt
added fvar<var> and fvar<fvar<T>> tests to cos and cosh
added fvar<var> and fvar<fvar<T>> tests to erf and erfc
added fvar<var> and fvar<fvar<T>> tests to exp, exp2, expm1
added tests for fvar<var> and fvar<fvar<T>> to fabs, fdim, floor, fma