[DNM] Improvements on sponsored transaction fee through the new TransactionExtension
interface
#3898
+751
−95
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Built on top of #3712
Adapt the changes in fee sponsorship transaction extension to make everything compile and work (see previously introduced
free_transaction_extension_test
which now passes).Also, the
free_transaction_extension_test
test case now tests a regular, non-sponsored transaction as well to make sure nothing is broken.Still a POC and not production ready.