Release v0.1.4

IMPROVEMENTS

• OpenAPI updates
• Added 1098 sub-records
• Update for 1099 forms
• Added extension block for 10991tc, 1099q, 1099r, 1099s, 1099sb
• Clean up and improved code linting
• Other records added
• Documents storage interface
• Added PDF generator
• Self-test for example data
• Validation logic for combined federal/state code
• Regenerate client
• Install script added for pdftk (for pdf generator)

BUILD

• Upgrade mux github.com/gorilla/mux to v1.8.0
• Upgrade cobra github.com/spf13/cobra to v1.1.1
• Upgrade testify github.com/stretchr/testify to v1.7.0
• Upgrade oauth2 golang.org/x/oauth2 to commit hash f9ce19e
• Migrate from identity to base/logger and base/database