NUnit 2.7.0

Release 2.7.0 drops a number of NUnit programs that have not been supported for a while or are available elsewhere:

• NUnit Mocks
• pNUnit
• NUnit Project editor (available as a separate project)

What's Changed

• Remove (tacit) use of LoadWithPartialName with nunit.framework by @cyanite in #63
• Rename NUnit.Core package to NUnitV2.Core by @CharliePoole in #65
• Update version to 2.7.0 by @CharliePoole in #66
• Drop nunit.mocks project by @CharliePoole in #67
• Remove pNUnit from repository by @CharliePoole in #68
• Remove project editor from this project by @CharliePoole in #69
• Fix up message for missing project editor executable by @CharliePoole in #70
• Rename core package by @CharliePoole in #72

Full Changelog: 2.6.7...2.7.0