add math comparison functions
fix for clang3.4.2
fix config for C++14
fix complex norm
add types::joint_types
fix joint_types implementation
erace unnecessary specialization
add types::tuple_cat
add copyright fimbul
add types::rebind, types::assign
reimplementation types::tuple_element, types::tuple_size
fix types::joint_types, types::rebind_types implementations
add sprout::addressof
add SPROUT_FORWARD variadic version