Added positive test for duplicate test method names
Renaming xunit1 only tests
Added class + collection fixture failure tests
Fixing tests
Handling new beta3 messages

(Except they're not wired up in xunit, so they do nothing. Everything still goes through IErrorMessage)
Removed nupkg. Shouldn't have been checked in
Updated nuspec for build 2700
Updated to build 2716
Handling class fixture dispose exceptions
Removed nasty shared state!

Class and collection cleanup failure now uses xunit2 error messages.
Collection cleanup failure fails all associated classes and methods.
IErrorMessage is now xunit1 only and includes enough context to report
errors without requiring shared state (although it assumes it has to
fail a class). Requires build 2716 + some smaller fixes (xunit/xunit#143
and xunit/xunit#144)
Re-enable parallelisation!
Merge pull request #16 from xunit/xunit2-parallelisation

Xunit2 parallelisation