[doc] Update Changelog for 1.1

doc/ChangeLog.md

@@ -2,6 +2,45 @@
 
 # Changelog
 
+## Version 1.1.0
+
+This is version 1.1.0 of mpi, a high-level C++ interface to the [Message Passing Interface].
+
+We thank all contributors: Philipp Dumitrescu, Alexander Hampel, Olivier Parcollet, Dylan Simon, Nils Wentzell
+
+Find below an itemized list of changes in this release.
+
+### General
+* Add mpi::monitor class to allow stopping all ranks when exception is thrown on any one of them
+* Added layer to use triqs without MPI + tests
+* Make sure to specialize mpi_type<..> also for constant builtin types
+* Regenerate Apache copyright headers
+* Restore compatibility against itertools/unstable: Allow sentinel types for std::end/cend(range)
+* Add simple test for vector<non-pod> scatter/gather
+* Add mpi_broadcast and mpi_reduce for std::pair + test
+* Change mpi_gather/scatter for std::vector of custom type to just gather/scatter the vector and not its values
+* New poll barrier as alternative to mpi.barrier
+* mpi::details::convert should be recursive, trigger explicit conversion in else branch
+* Make sure to std::abort in mpi abort when not in an mpi env
+* Simplify check for mpi env vars, provide single static mpi::has_env
+* Fix generic mpi operations for vector/lazy types, Protect in_place operations against rvalues and const
+* Change type of mpi::lazy to match lazy implementation for triqs::gfs, add is_mpi_lazy checker
+* Check that all vector sizes match in all_reduce(std::vector)
+* Call to all_reduce should not take a root argument
+* Type bool should be associated with MPI_CXX_BOOL
+* Use MPI_CXX_DOUBLE_COMPLEX over Fortran-specific type MPI_DOUBLE_COMPLEX
+
+### doc
+* Add link to reference doc to README.md
+* Minor doc cleanups for doxygen generation, add Doxyfile and update .gitignore
+
+### cmake
+* Do not run mpi_monitor as nompi test
+* Set CXX standard using target_compile_features
+* Use unstable branch of itertools
+* Bump Version number to 1.1.0
+
+
 ## Version 1.0.0
 
 mpi is a high-level C++ interface to the [Message Passing Interface].