Diagnostic analyzer for getter only auto props

This extension contains a diagnostic analyzer that finds getter only properties with backing read-only field and converts them to getter-only auto-properties.

The analyzer is applied to code pattern that meet these criteria.

• There must be a getter only property with a simple return statement
• The return statement must reference a private readonly field defined in the same type
• The type of the field must match the type of the property

See the github repository at github.com/ifpanalytics/Ifp.Analyzers for further details.