v0.19.0

Features:

• starport scaffold commands support ints, uints, strings, coin, coins as field types (#1579)
• Simulation testing with simapp has been added to the default template (#1731)
• Added starport generate dart to generate a Dart client from protocol buffer files
• Added starport scaffold flutter to scaffold a Flutter mobile app template
• Parameters can be specified with a new --params flag when scaffolding modules (#1716)
• Simulations can be run with starport chain simulate
• cointype for accounts can be set in the config.yml (#1663)

Fixes:

• Allow using a creator field when scaffolding a model with a --no-message flag (#1730)
• Improved error handling when generating code (#1907)
• Ensure account has funds after faucet transfer when using cosmosclient (#1846)
• Move from io/ioutil to io and os package (refactoring) (#1746)