format functions

add <>_format functions

- urc_crypto_eckey_format
- urc_crypto_hdkey_format
- urc_crypto_output_format
- urc_crypto_account_format

- refactor tests to test new functions as well

v0.4.0-rc1

deps: update wally

wally+jade-rpc

add function to parse generic jade-rpc response into json, lossy
conversion is not allowed

0.0.2-rc2

list of changes

- renaming hdkey formatting functions: better more expressive names
- refactor return values of such functions to copy snprintf behaviour
- BIP32_SERIALIZED_LEN rather than magic number 78

0.0.2-rc1

adding parse_jadeaccount

slightly off-the-standard variation of parse_account

also: bit of refactoring of unit tests

0.0.1

fixing while integrating in gdk

arious fixes to the library found while integrating it in gdk.
Adding functionalities that were missing as well.