0.12.11

Public release of the vsSolutionBuildEvent 0.12.11 products.

* NEW: Visual Studio 2019 full support. SDK15. PR #45.

* NEW: Complete integration with VS2017. SDK15. PR #45.

       For VS2017 will be also available old SDK10 package implementation.
       But SDK15 is recommended.

* FIXED: Fixed IEnvironment.ProjectsMBE implementations.

* CHANGED: netfx target platform changes:

           * 4.0 only: VS2010, VS2012, VS2013, VS2015, VS2017
           * 4.6 only: VS2017, VS2019

* CHANGED: Replaced old msbuild helper on hMSBuild 2.1
           https://github.com/3F/hMSBuild

* CHANGED: Devenv netfx 4.0 only (SDK10).

* KNOWN: Known problem with VS2019 when modern VS platform produces the case when
         Build can be started before activation of our plugin.

         Solution: Just attach once our [status panel] and it will activate our plugin
         for early registering handlers.

* KNOWN: Known problem with VS2017 when upgrading from SDK10 release to SDK15:
         Deactivated [Status Panel] from `View` - `Other Windows`.

         Solution: Just close this panel. Then, open it again.

* NOTE: Our new releases migrated from SourceForge to GitHub Release Page:
        https://github.com/3F/vsSolutionBuildEvent/releases

        Most actual information is still here: https://vssbe.r-eg.net/Downloads/

* NOTE: About SDK10 / SDK15 versions:
        https://vssbe.r-eg.net/doc/Usage/#sdk10--sdk15-versions