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wave_billiard: new domains based on magnetron
lennardjones: conveyor belts and related domains
rde: shallow water equation on sphere

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lennardjones.c: support for cluster dynamics, interacting polygons
wave_billiard.c: some new domains, including domain generated by image file
rde.c: hydrodynamic equations on sphere

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rde.c: new equations now available on a sphere
lennardjones.c: support for coagulating molecules and DNA-like molecules
wave_billiard.c: some new domains and non-constant refractive indices

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Support for simulation on sphere in rde
New particle pairing options in lennardjones
More domain shapes

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New domains for wave_billiard (lenses, fibers)
New features for lennardjones (charges, molecules)
New DEMs and photo maps for Venus and Mercury

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New maps and DEMs for Mars and Moon
New features for charged particles and electric/magnetic field in lennardjones
Fixed issue with deprecated uint32 type (thanks to Waclaw Koscielniak)

v1.3

First publication of wave_sphere.c
Uncompress the .ppm.gz file to use with Earth map
Some additional features in lennardjones.c and wave_billiard.c

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First publication of shallow water equations.
Some new domains and initial conditions.

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Vicsek-type interaction in lennardjones
New initial conditions in lennardjones
New Tesla valves set-ups in rde
New boundary condition support in rde

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I was hoping to be able to do a major overhaul of the code for version 1.0, but due to lack of time, this will have to wait.
So it is just an update with some new features, mainly regarding chemical reactions in lennardjones.c, domain shapes in rde.c, and types of index of refraction in wave_billiard.c.
Constants have been updated in some old programs for compatibility.