* is now aligned with the general [app4triqs](https://github.com/TRIQS/app4triqs) application skeleton
* brings a major rework of the VASP interface, including thorough documentation, tutorials, a new Hamiltonian mode, the option to select bands instead of an energy window, and many small bugfixes.
* brings a major update of the block structure functionalities especially for SOC calculations, with detailed documentation and tutorials. Allows more control over the block structure coming from DFT, cutting out certain orbitals or throwing away off-diagonal elements when preparing input for the solver.
Restructuring
-------------
To be aligned with other applications for TRIQS, various files and folders had to be moved to new locations. The c++, fortran and python parts all are now in separate folders. The converter files have been more logically split into their own folders and name spaces. For example the Vasp converter is now located under `python/triqs_dft_tools/converters/vasp.py`. Especially the test folder structure was adapted to fit to the app4triqs skeleton, which separate folders for C++ and python tests.
Dependency Managment
--------------------
We are managing the interdependencies of the various library components of triqs now using cmake.
Per default cmake will pull those dependencies from their corresponding
GitHub repositories, build them, and install these components together
with TRIQS, unless they are found in your system.
This behavior can be altered using the additional cmake options
*`-DBuild_Deps="Always"` - Always build dependencies, do not try to find them
*`-DBuild_Deps="Never"` - Never build dependencies, but find them instead
during the configuration step. See also the TRIQS documentation for more detailed instructions.
* Changed 'orb' parameter to 'ish' for consistency in function summ_deg_gf in file sumk_dft.py
* small fix to read_inp_from_h5 function of Sumk
* renamed converters from app_converter.py to app.py
* look at the mesh of each shell of Sigma_imp, not just the first shell
* add function to find min and max of band energy, and add warning to set_Sigma if its mesh is smaller than the energy bounds
* warning for set_Sigma if ReFreqMesh is too small
* fixed a slicing bug for the calculation of the target density in the VASP converter, which selected 1 band less in the correlated window than required.
* doc on automatic basis rotations
* Bugfix in calculate_density_matrix for purely imaginary off-diagonals
* revamping the VASP interface documentation. Rewrote the interface with VASP guide. Removed the unused in doc/vasp. Start for SVO VASP tutorial as ipynb
