ASPECT v1.5.0

This release includes the following changes:

• New: Choice between different formulations for the governing equations including Boussinesq and anelastic liquid approximation.
• New: Melt transport (two-phase flow).
• Particles: new generators, ghost exchange, performance improvements, interpolation to fields.
• New: Nondimensional material model for incompressible (using the Boussinesq approximation) and compressible computations (with ALA or TALA) for nondimensionalized problems. This can be used for benchmark problems like Blankenbach, King, etc..
• New: Optional DG method for temperature/composition.
• Adiabatic conditions: rework, now includes a reference density profile
• Free surface: overhaul.
• New cookbooks: continental extension, finite strain.
• New benchmarks: TanGurnis, Blankenbach, King.
• New: viscoplastic material model.
• Material model interface cleanup.
• Assembly performance improvements.
• New: memory statistics postprocessor.
• New: initial topography plugins.
• Many other fixes and small improvements.