Merge pull request #1 from fromradio/master

asdf
Merge remote-tracking branch 'upstream/master'
add the LM method
resolve conflicts
2
Merge remote-tracking branch 'upstream/master'
NonlinearSquare
Delete LevenbergMarquardt.hpp
Update Test.cpp
Update NonLinearSquare.hpp
Update FuncRepository.hpp
Merge pull request #15 from cbywxkj/master

LM method