Fix for proto-as default value deserialization

[mvandeberg]

Resolves #66

Brief description

Uses @koinos/proto-as 1.0.2 which fixes default value behavior on deserialization.

Checklist

• [X] I have built this pull request locally
• [X] I have ran the unit tests locally
• [X] I have manually tested this pull request
• [X] I have reviewed my pull request
• [X] I have added any relevant tests

Demonstration