increase maximum length of char filename in saveVtk method for FlowEngine
added mask_t type for bitmask variables to be int or optionally std::bitset of fixed (yet arbitrary) size. Added bitset to/from python long conversion. Added MASK_ARBITRARY cmake option. Subsequent changes in other files
corrected git warning in CMakeLists.txt
Liquid migration model, code refactoring.
Add script to changes commit`s author`s names.
Fix typo in installation.
PFV code refactoring.

Implement generaton of hpp-files for each cpp to escape
function redifinitions.

http://www.mail-archive.com/yade-dev@lists.launchpad.net/msg10232.html
Fix typo in previous commit.
Fix templates names.
Revert "Set minimal required Eigen3 version 3.2.1"

This reverts commit 3dc19729b196389c14da54238ae1f28f20e62a47.
Clean in ymport.stl

Remove unneded and commented lines
Remove service-messages in CMakeLists
Add missed #pragma once
Add RELEASE file.
Update changelog.
Delete RELEASE file.
Revert "Revert "Set minimal required Eigen3 version 3.2.1"" / Thanks Anton for uploading the backport

This reverts commit 56bb96e9d50ac2e803df5a7003388696ff95c43a.
fixed bug in export.VTKExporter.exportInteractions (question #250922)
modification of utils.UnstructuredMesh, added utils.polyhedron
Add YADE_PTR_DYN_CAST to define dynamic_cast.