area calculation wflow_hbv

replaced self.reallength with self.xl and self.yl for cell area calculations, for lat lon this is more precise.

Bug fix release for 2020.1 (reservoirs in wflow_hbv)

exclude large examples dir from source distribution

2019.1

- Wflow\_sbm, redesign of lateral subsurface flow because of a bug that resulted in an overestimation of lateral subsurface flux:

    - The kinematic wave approach is used to route subsurface flow laterally.
    - Kinematic wave solution for surface (overland and river) and subsurface flow added to wflow\_funcs, and used by wflow\_sbm.
      Numba (open-source JIT compiler) is used to accelerate these functions. This replaces the PCRaster kinematic wave solution.
    - A seperate kinematic wave reservoir for river (self.RiverRunoff) and overland flow (self.LandRunoff)
    - Lateral subsurface flow and overland flow feed into drainage network (channel) based on ratio slopes
      (slope upstream cell / (slope upstream cell + slope cell))
    - Option to provide land slope and river slope (staticmaps)
    - Removed sub-grid runoff generation
    - Removed re-infiltration of surface water

- Wflow\_hbv uses kinematic wave solution for surface flow available in wflow\_funcs (replacement of PCRaster kinematic wave solution)
- Option to enable iteration (smaller time steps) for kinematic wave solution for surface runoff (wflow\_hbv and wflow\_sbm)
- Added hydrological model wflow\_w3 to wflow framework, based on Australian Water Resources Assessment Landscape model (AWRA-L),
  an improved version compared to wflow\_W3RA.
- Added hydrological model wflow\_stream to wflow framework (STREAM (Spatial Tools for River Basins and Environment and Analysis of Management Options)).
- Added experimental version of wflow\_sediment to simulate soil erosion and delivery to the river system.
- Added the wflow\_emwaq module: provides a set of functions to create and link a Delft3D-WAQ or D-Emission model to a wflow model.
- Update of lake modelling for wflow\_hbv and wflow\_sbm (including also Modified Puls Approach) in wflow\_funcs
- Update of glacier model (used by wflow\_hbv and wflow\_sbm)
- Parameter Manning N of river can be linked to streamorder for wflow\_hbv
- setuptools_scm used for version wflow package

fix several warnings in the tests

adapter changes working to zero config

topoflex update fro freezeing

double line removed

netcdf bug

in previous, fixed subdaily timestep prblem