[Gmsh-announce] New Gmsh release: 4.2.0

[Christophe Geuzaine]

New in 4.2.0: changed type of node and element tags in API to support
(very) large meshes (using size_t instead of int); new MSH4.1 revision of the
MSH file format, with support for size_t node and element tags (see the
reference manual for detailed changes); changed the logger, getPeriodicNodes and
setElementsByType API; added support for reading STEP labels and colors with OCC
CAF; changed default "General.OCCTargetUnit" value to none (i.e. use STEP file
coordinates as-is, without conversion); improved high-order mesh optimization;
added ability to import groups of nodes from MED files; extruded meshes now
fill-in periodic node information; enhanced Plugin(Distance) and
Plugin(SimplePartition); removed unmaintained plugins; removed default
dependency on PETSc; small improvements and bug fixes.

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