2.0.0 alpha release 2

This is the second alpha release for HELICS 2.0. All C/C++ based tests are passing. So for those operations it has equivalent capabilities as the 1.X releases. The language bindings are not operational yet, with the MATLAB interface being farthest along. The target for the beta.1 release will be making sure all the language bindings work and compile. This release also includes several updates to the API's as learned from the previous release.

The target date for the beta.1 release is October 1.
Development work throughout the Beta release process will be to verify operations of the novel capabilities in HELICS 2.0 and add the remaining new planned capabilities.