release/0.2.x candidate (#1126)

* add RELEASE file. Update Code release number

* update git workflow documentation

* Update RELEASE_NOTES.md

* Update RELEASE

* Update RELEASE_NOTES.md

Co-authored-by: Sergey Klevtsov <s.klevzoff@gmail.com>
Co-authored-by: Francois Hamon <fhamon@stanford.edu>
Co-authored-by: Andrea Franceschini <af1990@stanford.edu>
Co-authored-by: Francois Hamon <fhamon@stanford.edu>
Co-authored-by: Sergey Klevtsov <s.klevzoff@gmail.com>
Co-authored-by: Matteo Cusini <49037133+CusiniM@users.noreply.github.com>
Co-authored-by: Yue Hao <hao1@llnl.gov>
Co-authored-by: Nicola Castelletto <38361926+castelletto1@users.noreply.github.com>
Co-authored-by: Joshua White <white230@llnl.gov>
Co-authored-by: Herve Gross <40979822+herve-gross@users.noreply.github.com>

Author: 9 people

NOTICE

@@ -1,7 +1,7 @@
 LAWRENCE LIVERMORE NATIONAL LABORATORY NOTICE
 ---------------------------------------------
 
-LLNL-CODE-746361
+LLNL-CODE-812638
 
 Portions of this work were produced under the auspices of the U.S. Department 
 of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

README.md

@@ -61,4 +61,4 @@ For acknowledgements, please read the [ACKNOWLEDGEMENTS](./ACKNOWLEDGEMENTS ) fi
 
 For notice, please read the [NOTICE](./NOTICE ) file.
 
-`LLNL-Code-746361`  `OCEC-18-021`
+`LLNL-CODE-812638`  `OCEC-18-021`

RELEASE

@@ -0,0 +1,13 @@
+*******************************************************************************
+
+GEOSX version 0.2.0
+
+ Copyright (c) 2018-2020 Lawrence Livermore National Security LLC
+ Copyright (c) 2018-2020 The Board of Trustees of the Leland Stanford Junior University
+ Copyright (c) 2018-2020 Total, S.A
+ Copyright (c) 2019-     GEOSX Contributors
+ All rights reserved. See details in the file LICENSE.
+
+Unlimited Open Source - LGPL v2.1 Distribution
+LLNL-CODE-812638
+OCEC-18-039

RELEASE_NOTES.md

@@ -19,7 +19,54 @@
 
 Version v0.2.0 -- Release date 2020-06-20
 ==========================================
-Lots of stuff to fill in...
+* Extensive updates to Data Repository
+* Discretization
+  * Finite element interface
+    * Kernel launching interface looping abstraction
+    * Element formulations for 1st order:
+      * 8-node hexahedron
+      * 6-node wedge
+      * 5-node pyramid
+      * 4-node tetrahedron
+  * Cell-centered Finite Volume method with Two-point Flux Approximation (TPFA)
+  * Hybrid Finite Volume method with TPFA and quasi-TPFA inner products
+* Physics Solvers
+  * Solid mechanics explicit on GPU, implicit assembly on GPU
+  * Single-phase flow (assembly on GPU)
+    * Classical FVM and Hybrid FVM formulations
+    * Porous matrix and DFM fracture flow
+  * Compositional multiphase flow (assembly on GPU)
+    * Fully implicit isothermal overall composition formulation
+    * Fluid constitutive models:
+      * Equation-of-state hydrocarbon compositional
+      * Three-phase extended black-oil
+      * Two-phase CO2-brine
+  * Multi-segmented wells for single phase and compositional multiphase flow (assembly on GPU)
+  * Surface Generation
+    * Topology change (legacy GEOS approach)
+* Embedded Discrete Fractures
+  * Enriched finite element method for the discretization of the mechanics
+  * Piecewise constant displacement jump enrichment
+  * Hydrofracture solver (legacy GEOS approach)
+  * Small strain aligned contact using Lagrange multipliers
+    * Discrete fracture model using a low-order stabilized mixed finite element method
+  * Proppant Transport Solver
+    * FVM formulation
+    * Major physical processes modeled:
+      * Proppant-fluid slurry flow and multicomponent transport in fractures
+      * Proppant gravitational settling
+      * Proppant bed build-up and development space
+* Mesh Structure
+  * Introduced the concept of extrinsic mesh data
+  * Fracture elements to represent FV cells in fractures
+* VTK output
+* Linear algebra interface layers for Hypre, Trilinos, Petsc
+  * Common interface for supported linear algebra packages
+  * Krylov solvers (CG, GMRES, BiCGSTAB)
+  * Preconditioners (algebraic multigrid, incomplete factorizations)
+  * Block matrix and vector support
+  * Serial and parallel direct solvers
+
 
 Version v0.1.0 -- Release date 2018-02-15
 ==========================================
@@ -28,7 +75,7 @@ Initial Code Release containing:
   * Group
   * Wrapper
   * Input processing 
-* Physics Solver hierarcy
+* Physics solver hierarchy
   * Solid Mechanics
 * Mesh data structure
   * NodeManager, EdgeManager, FaceManager, ElementManager