Integrate abieos

[ksiazkowicz]

• Use abieos to serialize action payloads instead of abi_json_to_bin,
• Use abieos to deserialize action payloads,
• Add public_key ABI type, type out newaccount action

[codecov]

Codecov Report

Merging #8 into master will increase coverage by 0.06%.
The diff coverage is 98.73%.

@@            Coverage Diff             @@
##           master       #8      +/-   ##
==========================================
+ Coverage   98.55%   98.61%   +0.06%     
==========================================
  Files          11       11              
  Lines         483      505      +22     
==========================================
+ Hits          476      498      +22     
  Misses          7        7              

Flag	Coverage Δ
#unittests	98.61% <98.73%> (+0.06%)	⬆️

Impacted Files	Coverage Δ
aioeos/types/__init__.py	100.00% <ø> (ø)
aioeos/serializer.py	99.43% <98.14%> (-0.57%)	⬇️
aioeos/contracts/eosio.py	100.00% <100.00%> (ø)
aioeos/keys.py	94.39% <100.00%> (+0.05%)	⬆️
aioeos/rpc.py	100.00% <100.00%> (+1.11%)	⬆️
aioeos/types/abi.py	100.00% <100.00%> (ø)
aioeos/types/authority.py	100.00% <100.00%> (ø)

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