====== Polymake 4.0 ======

Release dates: 
  * 4.0: January 29th, 2020
    * r1: February 19th, 2020

==== Changelog ====

-- general --
  * Data file format switched from XML to JSON
  * Basic datatype for all sizes and indexes in C++ is now 'Int' which is 'long int'
  * Object class in C++ renamed to BigObject

-- distribution --
  * support for clang 9
  * [r1] compatibility with gmp 6.2

-- interfaces --
  * libnormaliz:
    - Update bundled version to 3.8.3
    - configure: check for extra libraries
  * cdd: Fix configure.pl for fedora installed cdd
  * porta: disable convex hull rules, can still be called via porta_primal and porta_dual
  * TOSimplex: various improvements

-- core --
  * [r1] fix memory leak with pool allocator
  * [r1] fix BigObject construct and cast from callable library
  * [r1] fix --touch
  * [r1] invalid TERMs will warn instead of die

-- common --
  * PolyDB: new layout of collections and metadata, no XML or perl code stored with data anymore
  * PolyDB: using JSON schemas for collection definition
  * PolyDB: new object-oriented user interface
  * [r1] improve type compatibility for GF2

-- fan --
  * HyperplaneArrangement: Refactor
    - Remove property INPUT_HYPERPLANES
    - Property HYPERPLANES allows redundant hyperplanes now
    - Introduce simple version of facet_arrangement

-- fulton --
  * ToricDivisor: Introduce property VERY_AMPLE
  * New standard construction for weighted projective space

-- polytope --
  * Polytope: new property FACET_VOLUMES
  * beneath_beyond: fixed bug in corner-case for non-fulldimensional input
  * minkowski_sum_fukuda: improvements and cleanup