separated Declaration into two subclasses: CodeDeclaration and ApiDeclaration.  getDeclaration now handles dart: links with a simple url
Building full url from method / class info
Including class references
Cleaned up
Cleaned up
Merge branch 'umop-linking-dart_sdk' of https://github.com/dart-lang/spark into umop-linking-dart_api
Refactored for clarity and added docs
Merge branch 'umop-linking-dart_sdk' of https://github.com/dart-lang/spark into umop-linking-dartsdk
Review fixes
Merge branch 'master' of https://github.com/dart-lang/spark into umop-linking-dartsdk
Merge pull request #1936 from dart-lang/umop-linking-dart_sdk

Linking dart-sdk declarations