ZenStack Release v0.3.0

[ymc9]

Closes #48 #54 #45 #53 #51 #58

• More robust policy checks
• Configurable logging (to stdout and emitting as events)
• Properly handles complex types like BigInt, Date, Decimal, etc.
• Makes sure Prisma schema is regenerated for related CLI commands
• @password and @omit attribute support
• Lower VSCode engine version requirement for the extension
• Better overall documentation

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This discussion was created from the release ZenStack Release v0.3.0.