Merge pull request #163 from pblasucci/master

fixed regression in .NET 4.6.1 support

Merge pull request #159 from pblasucci/master

fixed issues with build script

Merge pull request #158 from pblasucci/upgrade-netstandard2

Upgrade netstandard2

Merge pull request #148 from pblasucci/master

minor house-keeping; version bump to address corrupt NuPkg

Merge pull request #142 from pblasucci/master

Fixed small bug in socket option marshalling

Merge pull request #137 from pblasucci/master

version bump

Bump version to 12.1.1

Bump version to 12.1.0

Merge pull request #115 from pblasucci/master

Implemented new versioning scheme

Merge pull request #85 from pblasucci/master

updated libzmq;fixed bug in socket shutdown