Since Rob has committed his precipitation spatial interpolation, the 2D_interpolation reference result had to be updated. Several members in filter classes could be made const/static/private.

The default ilwr model in Atmosphere as been changed to Unsworth. The fixed snow albedo has been set to 0.85 for all filters/generators using it. 

The Config class can now import an ini file from another ini file, this could greatly simplify the management of operational deployments (a station that has a special configuration now can simply import a standard config file and redefine what it needs). This is either done with IMPORT_BEFORE or IMPORT_AFTER in order to choose who has precedence. Multiple (ie recursive) inclusions are supported with some enforced limitations to prevent circular dependencies.

Removing some unnecessary pointers (for things like "const double a = vecM[ii](param)") and replacing a vector push_back by a proper allocation in constructor followed by assignments

Lots of vectors copies were made using push_back(). This is definitely not efficient! This has been replaced by vec_o = vec_i, we will see which impact it has on performances...

Lots of small fixes after running cppcheck on Windows: unused variables, use ++i instead of i++ for complex types (ie mostly iterators for us) for more performance, a few variables that could be passed as const&, use vector.empty() instead of vector.size==0 (for clarity and potentially performances).

Two new members have been added to Grid3DObject, to store the heights of the 3D levels (ie: level 1 = 10m above ground, etc). This is similar as what is done by ARPS, GRIB, etc A boolean specifies if these are absolute or relative heights (ie: above DEM).

The unventilated temperatures filter and unheated rain gauge filter have been renamed. The "soft" option has been added to Unheated_RainGauge. And the usual documentation fixes...

Fixed more warnings, found by Code::Blocks. A bug when compiling gsoap files with migw has been fixed by a workaround (adding a macro definition in the CMakeLists.txt).

The last filters that had not been ported to the new filtering infrastructure have been ported and their documentation updated. All filters now use window specifications (instead of vector of pointers). The misleading filter argument "index" (for parameter type) has been renamed as "param" for all filters. The use of "unsigned int" for looping over vectors has been replaced by "size_t". The old "soft" behavior for the filters has been restored (ie: if not soft, a point that can not be checked by the filter is deleted).

A few more "consts" have been added.

The "passive_T" filter had a bug in its implementation, this has been fixed (using the wrong statistical fit). It should still be tested before operational use, though...

Checked the Passive_T filter on real data, added more flexibility to it (ie: it can compute the albedo using iswr and rswr, compute rswr from iswr and an albedo, etc) and fixed some mistakes. It now gives realistic results but a proper validation (ie: comparing with high quality, ventilated measurements) is still required.

The Passive_T filter has been reworked and renamed as ProcPassiveT. A proper documentation has been written for it.

All the cout have been replaced by cerr in order to avoid messing with the end user's application. Some old commented out code has been removed.