1.0.4: FIO Support (#832)
* FIO Signer: Actor derivation.
* FIO Signer: Actor test -- use test from fiojs.
* FIO Signer and TransationBuilder, add_pub_address.
* FIO TransactionBuilder: Expose maxFee for add_pub_address.
* FIO TransactionBuilder, add register_fio_address.
* Review comments.
* FIO Signer: Add proto and C interfaces, tests.
* FIO: Compile fix for iOS compile, method returning string and no parameters.
* FIO Signer: Add swift tests.
* Minor iOS codacy fix.
* FIO Signer: Add Kotlin tests.
* Android test fix.
* Remove DefaultTpid.
* Some API renames (review comment).
* Use Json library for json building (review comments).
* FIO Signer: add transfer_tokens_pub_key.
* Some renames (review comments).