Refactor ShouldThrowAsync for cancellation handing and add test (shou…

…ldly#560)

4.0.0-beta.1

Fixed null string comparison (shouldly#538)

* Failing tests that difference should not be shown for missing string

* Stop showing misleading difference for missing string

Add WinMerge to known diff tools (shouldly#510)

/u keeps WinMerge from adding the files to the MRU list
/wl makes the left file (received) read-only

src/Shouldly.Tests/ConventionTests/ApprovePublicAPI.ShouldlyApi.approved.cs

Add new logos

Merge pull request shouldly#446 from slang25/ToolingMigration

Kill net35 with fire

Merge pull request shouldly#428 from JosephWoodward/ShouldBeAssignabl…

…eToFix

Null fix for ShouldBeAssignableTo

Merge pull request shouldly#396 from slang25/master

Add net451 support

Merge pull request shouldly#390 from JosephWoodward/Rc2ToRTMUpdate

Upgraded to .NET Core RTM

Add in nuget push source