3.2.0 for R4 (release 20210504)

Changes:

• #1701: Moved another set of classes to Common
• #1690: FhirClient: handle prefer operation outcome in resource response
• #1689: Correct construction of Terminology service output
• #1685: Made some extensions of ElementDefinitionNavigator public (for R4)
• #1683: Reorganize slicing helper functions (for R4)

This list of changes was auto generated.