ABI Functionality

[tzaffi]

Handle ABI types for Graviton Dry Runs

Summary of Changes

• CHANGELOG.md - update with upcoming v0.2.0 aka 🐗
• Makefile - make all-tests option
• graviton/blackbox.py -
  • DryRunEncoder - allow specifying abi_types by supplying as a list parameter to encode_args() method. When present, the list needs to be the same length as the args being encoded. When None is supplied as an abi_type the corresponding arg is not encoded.
  • DryRunExecutor - allow specifying abi_argument_types as well as an abi_return_type . abi_argument_types are handed off to the DryRunEncoder for encoding purposes, while after dry-run execution, abi_return_type is given to the resulting DryRunInspector for ABI-decoding into Python.
  • DryRunInspector - allow specifying an abi_type. When an abi_type is provided, last_log() will be decoded using that type after removal of a presumed 4-byte return prefix. To suppress removing the 4-byte prefix set config(has_abi_prefix=False). To suppress decoding the last log entry altogether, and show the raw hex, set config(suppress_abi=True).
• tests/integration/abi_test.py - new integration test that uses PyTeal generated sum_abi program to sum the array [1, 2, 3, 4, 5] and assert that the result is indeed 15
• tests/unit/encode_test.py - new unit test for DryRunEncoder

[tzaffi]

@barnjamin - This is in the spirit of your PR and allows bytes through unimpeded

[michaeldiamant]

@tzaffi Thanks for finding a way to extend graviton to work with ABI types. ☕

Considering the breadth of tests added here + algorand/pyteal#322, I feel like the PR proves it's ready to be merged.