Replace external dependencies in Boost with internal ones

• Removed the xms option from conanfile.py. This was an internal option that was no longer used.
• Added wchar_t option to conanfile.py to control Visual Studio's /Zc:wchar_t flag.
• Switch to a new Boost package that doesn't have any external dependencies.
• Update to xmscore 5.0.1 and xmsgrid 6.0.0.

4.1.4

Updates to the idw python interface, including a bug fix for doing 3d interpolation through the python interface.

4.1.3

Get the 4.1 release correct this time

4.1.2

Release 4.1 comes off of master.

Bug fix for crash with SetScalars

Fix a bug when using a nodal function and a call was made to SetScalars.

Add inGenerateRasterIdw function to C++ and Python interface

This function returns an array of raster values given mesh point data and raster information.

Add inGenerateRasterIdw function to C++ and Python interface

This function returns an array of raster values given mesh point data and raster information.

Use legacy wchar_t compiler flag MD builds

Prevents link errors when building with XMS.

VS2019

Only target VS2019 on Windows builds. Switch to Github Actions CI.

VS2019 development

Initial development tag for VS2019 refactor. All packages uploaded to testing/dev channels of conan and AquaPi. Do not use unless actively developing on refactor.