add stub for a retry strategy
add n-times retry handler
remove a couple unneeded mocks of retry strategy
add exponential backoff and tests
add retry count to existing cql.cassanity instrumentation payload
handle the "Thrift::Exception" superclass which the various thrift
vendor exceptions look to subclass
:lipstick:
clean up some code comments
Move retry_strategy.rb inside retry_strategies folder to match module/namespace.
Document default retry strategy as private.