Add documentation for VCX Agency, rename variables
IS-1493: save-transaction does not quote JSON output correctly
IS-1486: Switch libs to libssl 1.1 on Ubuntu 18.04
add maven wrapper to maintain build environment more easily.
IS-1480: Refactor libVCX integration and unit tests
Feature/is 1467 Move crypto functions to indy-utils sub crate
[WIP] IS-1450 New functions to test Libvcx against aries-test-suite
use version 0.2.5 of sodiumoxide instead of 0.0.19
Added documentation for proof of payment address control
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