Merge pull request #4575 from nunit/prepare401

Prepare patch release 4.0.1

Merge pull request #4562 from nunit/prepare40-2

Fixed package description

prepare release 4.0.0-beta.1

Alpha release of NUnit 4.0

Merge pull request #4070 from nunit/release-3-13-3

Changes for the 3.13.3 Release

Merge pull request #3838 from nunit/release3132

Release 3.13.2

Merge pull request #3748 from nunit/issue/3745

Create NuGet source packages, snupkg

Merge pull request #3703 from nunit/release313

Release 3.13

Merge pull request #3239 from nunit/release-311

Release 3.12