Version 1.1 - Omicron

• variable and sensitivity breakdowns added
• in solution tables, models no longer default to being sorted by sensitivity

Version 1.0.0 - Atmospheric River

• no longer supports Python 2
• no longer supports mosek8 C bindings (the "mosek" solver)
• new dependencies: plotly, adce, numpy >= 1.16.4, matplotlib
• CVXOPT solver interface now uses linear programming formulations as applicable
• unicode printing by default, except on windows
• vastly improved diffing, pickling
  • option for compressed solution pickles
• various speed improvements, especially during SGP solves
• reduced memory usage
• SGP solves now use the PCCP method
  • raise warning on nonconvergence
• clearer solver errors
• new visualizations and improved old ones
  • Sankey, Variable Reference, Treemap, Icicle plots

v0.9.9 - final Python2-compatible release

• The decorator @parse_variables(__doc__, globals()) replacing exec parse_variables(...)
• Support for the MOSEK9 exponential cone solver. Install with pip!

And some things that are best seen in the docs:

• New and improved printing.
  • v0.9.1: A >= 2*s_(0,)*s_(1,) + 2*s_(0,)*s_(2,) + 2*s_(1,)*s_(2,), V <= s_(0,)*s_(1,)*s_(2,)
  • v0.9.9: A >= 2*(s[0]*s[1] + s[1]*s[2] + s[2]*s[0]), V <= s[:].prod()
• New syntax for modelnames.
  • v0.9.1: E_PowerSystem/Battery
  • v0.9.9: PowerSystem.Battery.E
• Dictionary constraints (which print nicely in addition to allowing easier access)
  • {"definition of Re": Re == rho*V*c/mu, "definition of D": D >= 0.5*rho*V**2*CD*S}

v0.9.0

• almost complete Python 3 support (except for parse_variables)
• Speedups, especially for SP solves
• Models now number themselves only if their whole path is copied by another Model
• Fixes to some sensitivity edge cases
• Dropped 400 lines of code (down to 5100) while adding 120 lines of tests (up to 2450). Still at 290 lines of examples.

v0.8.0

• Much cruft removal, various speedups and fixes
• Auto-differentiation of linked sensitivities
• Simpler installation process
• Solution differencing and pickling
• Tight/Loose warnings in solution and in solution tables
• Tight/loose constraints in solution tables

v0.7.0

• Variable's values are now used only in their first ConstraintSet; in other ConstraintSets they're free variables
  • this can be overriden by setting constant=True during variable declaration
• MOSEK home directory can be set by a MSKHOME environment variable at build time
• sol(var) now always returns Pint Quantities, even if the variable is dimensionless
• sol[...][var], on the other hand, now always returns floats / numpy arrays of floats
• Optional boundedness checking in docstring (see usage in docs)
• Automatic boundedness checking for GPs
• Sankey diagrams
• Many other fixes

v0.6.0

Version 0.6.0

• new much faster NomialMap data structure (#682)
• Many bug fixes and small improvements.
• 6900 lines of code, 2200 lines of tests, 2100 lines of docstring.

v0.5.3

Version 0.5.3

• faster SP solves (#1109)
• LinkedConstraintSet deprecated (#1110)
• Fixes to autosweep, ConstraintSet, interactive
• Solution time is now stored with soltutions (including sweeps/SPs)
• Model strings are divided with slashes (e.g. Airplane/Wing)

v0.5.2

• Added new sweep and autosweep methods to Model
  • Added plot routines to the results of those routines to make it easy to plot a 1D sweep.
• Added new summary method to solution_array.
  • It and table accept iterables of vars, will only print vars in that iterable (or, by default, all vars)
• Cleaned up and documented the interactive submodule
  • removed contour and sensitivity plots
  • added a 1D-sweep plotting function
  • added that plotting function as an option within the control panel interface
• Overhauled and documented three types of variables whose value is determined by functions:
  • calculated constants
  • post-solve calculated variables
  • between-GP-solves calculated variables (for Sequential Geometric Programs)
• Fix Bounded and implement debug() for SPs
• Apply subinplace to substitutions dictionary as well
• Require GP substitutions to be Numbers only
• Extend Bounded to one-sided bounds
• Print model's numbers by default, unless "modelnums" in exclude
• Implement lazy keymapping, allowing GP/SP results to be KeyDicts
• Handle Signomial Inequalities that become Posynomial Inequalities after substitution
• Various documentation updates
• Various bug fixes

v0.5.1

• O(N) sums and monomial products
• Warn about invalid ConstraintSet elements
• allow setting Tight tolerance as a class attribute
• full backwards compatibility for init methods
• scripts to test remote repositories
• minor fixes, tests, and refactors
• 3550 lines of code, 1800 lines of tests, 1700 lines of docstring. (not counting interactive)