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* load 4-column data: Q, R, dR, dQ, with dQ using 1-sigma resolution
* support Zeeman/Felcher effect for spin-flip in large applied fields
* fix Fresnel calculation
* add --view option from command line to select plot format
2014-11-05 R0.7.7
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* add end-tethered and mushroom models for polymers
* support magnetic incident and substrate media
* support Microsoft Visual C compiler
* allow stop after a maximum amount of time (useful in batch queues)
* add entropy calculator
2014-05-30 R0.7.6
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* add levenberg-marquardt to available fitting engines
2014-05-01 R0.7.5
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* display constraints info on graph
* estimate parameter uncertainty from covariance matrix
* fix windows binary
* read magnetic models from reflpak
2014-04-03 R0.7.4
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* demonstrate functional profiles in examples/profile/flayer.py
* add MPI support
* add stopping condition for DE
* support python 2.6, 2.7 and 3.3+
* fix confidence intervals (old confidence intervals are 2x too small)
2013-07-11 R0.7.3
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* R0.7.2 broke parallel fitting
2013-06-26 R0.7.2
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* support new NCNR reflectometers PBR and Magik
* better labelling of data sets
* monospline fixes
* allow fit interrupt from GUI
2013-05-07 R0.7.1
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* simplify contrast variation fits with free variables shared between models
* add FASTA sequence reader with support for labile hydrogen substitution
* redo magnetic profiles so magnetism is a property of nuclear layers
* use material name or layer number to reference model layers
* fix density calculations for natural density
* add support for density and mixtures into chemical formulas
2013-01-25 R0.7.0
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* split bumps into its own package
* allow Q probes and oversampling
* allow penalty constraints
* resume a fit from last saved point
* fix garefl and staj file loaders
* fix polarization cross section identifiers
* simulate reflectivity from existing Q,dQ,R,dR data
* show chisq variation in variable histogram
2011-07-28 R0.6.19
==================
First public release