split Mpl.hpp into Index, Logical, Range

4 jobs for feature/restructure_mpl in 25 minutes and 44 seconds
Status Job ID Name Coverage
  Test
passed #8625
debian:10 clang-6-libcpp-17

00:25:44

passed #8624
debian:10 gcc-8-17

00:18:42

passed #8626
debian:9 gcc-6-14

00:19:54

passed #8627
ubuntu:18.04 clang-6-17

00:24:17