Added tests.
Refactoring emitDeclaration, separate emitDeclaration from emitFiles
Refactoring parameters formatting
Update language service to use getDeclarationDiagnostics instead of emitFile to get declaration errors
Add test case to make sure that we only report an error from target file
Address code review
Fix signature help crash when requested outside argument list
Comment examples of when findListItemInfo can return undefined
Merge pull request #890 from Microsoft/sigHelpCrash

Fix signature help crash when requested outside argument list
Addres code review
initial revision of formatting
Merge remote-tracking branch 'origin/release-1.3' into reportErrorFromTargetFile
Merge branch 'reportErrorFromTargetFile' into release-1.3
fix issues in formattingContext - 35 failing tests so far
do not check Missing
temporary disable smart indentation for type literals, fix computation for end line position
fix a few issues in rules
update baseline
Adjust rules to handle interfaces correctly - 19 failing tests
multiline comments support