feat: v5.2.7

Merge branch 'ChaseFlorell-users/CFlorell/task/cleanup_asInternal'

# Conflicts:
#	AutomaticInterface/AutomaticInterface/AutomaticInterface.csproj
#	AutomaticInterface/AutomaticInterface/InterfaceBuilder.cs
#	AutomaticInterface/AutomaticInterface/RegisterAttributesExtensions.cs
#	README.md

v5.2.1 everywhere

Merge pull request #75 from simonmckenzie/fix/fully-qualify-generic-i…

…nterface-type-parameters

Emit fully qualified type constraints for generic interfaces

Merge pull request #72 from codecentric/71-method-with-generic-type-c…

…onstraint

feat: fix missing notnull constraint