Idaes-pse

- MatOpt tool for facilitating the design of nanostructured materials via mathematical optimization.
- New “idaes get-examples” command
- Reorganisation of model libraries
- Helmholtz Equations of State, including Span-Wagner EoS for CO2
- In-built constants module with definitions of common physical constants
- Support for user-defined scaling of variable and constraints
- New subtypes for pressure changer units: turbine, compressor and pump.
- Properties Interrogator tool to identify thermophysical and reaction properties required by a given flowsheet
- Improved support for systems with non-condensable or non-vaporizable components
- Improvements to initialization routines
- Tools to assist with initializing dynamic flowsheets, including element-by-element forward integration function
- Better control of output messaging using loggers
- Clean up of code for faster import times

- Fix pip packaging so that tests succeed (there were missing files)

- Power generation library and SCPC flowsheet example
- Minor fixes to coverage version and pint/pandas series conversion

- A supercritical steam cycle was added along with [a Jupyter notebook to run the example](https://github.com/IDAES/idaes-dev/blob/1.4_rel/idaes/examples/power_generation/supercritical_steam_cycle/supercritical_steam_cycle.ipynb).
- Bug fixes in Cubic EoS, Feedwater heater & IAPWS

- Install documentation fixes
- Correcting path for Cubic Property Package

- New idaes extensions available as a binary distribution including pre-compiled
- Property packages
- IPOPT solver
- PyPi package to allow easier `pip install idaes-pse` installation
- Improved installation instructions
- Developed a homotopy meta-solver
- Support for cubic equations of state, including Peng-Robinson and Soave-Redlich-Kwong
- Improvements to initialization of Mixer and Splitter, plus more general initialization utility methods
- Fixed bug in pressure changer report method
- Improved test coverage of core and unit model libraries