Rebased the Portable branch on master and squashed commits.
Fixing the portable build after rebasing off master
Removed the Mixed Platforms platform that Visual Studio keeps re-adding
Merged in latest from master
Add Classic asserts to NUnitLite
Merge pull request #340 from nunit/issue-335

Add Classic asserts to NUnitLite
Merged in latest from master
Updated the build scripts to build portable
Removed portable from the Travis build and added portable projects to NUnit.Linux.sln
Removed portable from the linux solution
Merge pull request #313 from nunit/issue-261

Issue 261 - NUnit Portable - Appveyor error is unrelated, so merging.
Move all AssemblyInfo.cs files to Properties folder
Additional fixes to portable build; correct inconsistency in name of Compatibility namespace
Merge pull request #347 from nunit/move-assemblyinfo

Move assemblyinfo
Use stopwatch in DelayedConstraintTests.cs