Added Euler Implicit integrator, with Newton Raphson iterations etc. It works ok.
Added Euler Implicit integrator, with Newton Raphson iterations etc.
It works ok.

Milad-Rakhsha/chrono,tjolsen/chrono,hsu/chrono,rserban/chrono,Bryan-Peterson/chrono,Milad-Rakhsha/chrono,projectchrono/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,jcmadsen/chrono,Milad-Rakhsha/chrono,projectchrono/chrono,projectchrono/chrono,tjolsen/chrono,rserban/chrono,Milad-Rakhsha/chrono,jcmadsen/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,jcmadsen/chrono,Bryan-Peterson/chrono,hsu/chrono,PedroTrujilloV/chrono,andrewseidl/chrono,projectchrono/chrono,PedroTrujilloV/chrono,armanpazouki/chrono,armanpazouki/chrono,rserban/chrono,hsu/chrono,hsu/chrono,amelmquist/chrono,jcmadsen/chrono,andrewseidl/chrono,PedroTrujilloV/chrono,PedroTrujilloV/chrono,dariomangoni/chrono,jcmadsen/chrono,PedroTrujilloV/chrono,jcmadsen/chrono,rserban/chrono,dariomangoni/chrono,amelmquist/chrono,dariomangoni/chrono,amelmquist/chrono,amelmquist/chrono,projectchrono/chrono,armanpazouki/chrono,armanpazouki/chrono,rserban/chrono,tjolsen/chrono,armanpazouki/chrono,Bryan-Peterson/chrono,dariomangoni/chrono,dariomangoni/chrono,amelmquist/chrono,hsu/chrono,Bryan-Peterson/chrono,Bryan-Peterson/chrono,andrewseidl/chrono,amelmquist/chrono,andrewseidl/chrono,jcmadsen/chrono,andrewseidl/chrono,tjolsen/chrono,armanpazouki/chrono,tjolsen/chrono,rserban/chrono