Editing Release Notes (section)

===Additions and enhancements===

To the reproducible documents collection:

* tccs/sglowrank: Lowrank seismic wave extrapolation on a staggered grid (Fang, Fomel, Du, and Hu)
* xjtu/primer: A numerical tour of wave propagation (Yang)
* Moved rsf/usp/data to data/freeusp/land and added elevation statics
* tongji/lrmode: Fast algorithms for elastic-wave-mode separation and vector decomposition using low-rank approximation for anisotropic media (Cheng and Fomel)
* tccs/deblend: Iterative deblending of simultaneous-source seismic data using seislet-domain shaping regularization (Chen, Fomel, and Hu)
* tccs/time2depth2: A robust approach to time-to-depth conversion and interval velocity estimation from time migration in the presence of lateral velocity variations (Li and Fomel)
* tccs/nmodeblend: Deblending using normal moveout and median filtering in common-midpoint gathers (Chen, Yuan, Jin, Chen, and Zhang)
* tccs/synwav: Time-frequency analysis of seismic data using synchrosqueezing wavelet transform (Chen, Liu, Chen, Li, and Wang)
* sep/txamo: The time and space formulation of azimuth moveout (Fomel and Biondi)
* jlu/txyapf: Adaptive prediction filtering in t-x-y domain for random noise attenuation using regularized nonstationary autoregression (Liu, Liu, and Liu)
* sep/shearer: Earthquake stacks at constant offset (Claerbout)
* sep/super: A prospect for super resolution (Claerbout)
* trip/asg: Acoustic staggered grid modeling in IWAVE (Symes)
* tccs/synth: Carbonate reservoir characterization using seismic diffraction imaging (Decker, Janson, and Fomel)
* sep/avo: Seismic AVO analysis of methane hydrate structures (Ecker and Lumley)
* tccs/scan3: A fast algorithm for 3D azimuthally anisotropic velocity scan (Hu, Fomel, and Ying)
* sep/passive: Passive seismic imaging applied to synthetic data (Rickett and Claerbout)
* tccs/ortho: Random noise attenuation using local signal-and-noise orthogonalization (Chen and Fomel)
* tccs/strat: Stratigraphic coordinates, a coordinate system tailored to seismic interpretation (Karimi and Fomel)
* sep/aal: When is anti-aliasing needed in Kirchhoff migration? (Bevc and Lumley)
* sep/pefmult: Multiple suppression using prediction-error filter (Sun)
* xjtu/gpufwi: A graphics processing unit implementation of time-domain full-waveform inversion (Yang, Gao, and Wang)

To SCons:

* Added SLURM support for running MPI jobs through SCons
* Added usedatapath= in Fetch for placing downloaded data in DATAPATH by default
* Upgraded to scons-2.3.4
* Allow Fetch to run with top=None

To documentation:

To APIs:

To the Python package:

* sfbatch: script for submitting jobs to a cluster queue system 
* Changed MPIRUN from a command-line option to a configure option
* Updated sunrpc configuration for the current version of Cygwin on Windows
* vpannotate: interactive wrapper for annotations with sfbox

To programs:

* Added new color schemes (color= in sfgrey): lb (Light-Bartlein), gist_earth, spectral, seismic, owb (orange-white-black),  rwb (red-white-black), izoaz (isoluminant for azimuth data),  montag (spectral lightness rainbow) 
* sfipick: example Tkinter script for interactive picking
* sfvelan: interactive velocity picking using matplotlib
* Added x0= and mwt= parameters in sfconjgrad
* Added griddash= parameter to stdplot
* sflas2rsf: Convert LAS-2 well logs to RSF
* Added segy= and desc= parameters to sfheaderattr
* Renamed sfsvd sfpysvd and fixed sizes for output vectors
* Enabled depth= option for sfgraph with lines
* user/junyan: New contributor (Jun Yan)
* Added inv= flag in sfheaderwindow
* Added polyneg= flag in sfwiggle
* Added key= and nkey= parameters to sfheadermath
* sfcerf: complex error function
* color scheme can be specified by file name