0.4: Implement Serialize/Deserialize for Many

Support Serialize/Deserialize for Many
This required changing the Query/Expr structures, and so is technically a breaking change.

0.3.1

Add the #[unique] model field attribute. This can be used to add a UNIQUE constraint on the field.

0.3

• Beginning of support for Postgres types other than the ones built in via SqlType
• Improved R2D2 support
• IntoSql trait merged with ToSql
• Less copying during sql queries through use of SqlValRef

0.2.1

• Add query ordering
• Add colname macro
• Support i8 and u8 for SqlVal::int
• Fix sqlite datetime formatting
• Fix accidental postgres dependency whenever datetime feature was enabled
• Switch to once_cell instead of lazycell

0.2

• R2D2 Support
• More ergonomic ForeignKey equality tests
• log dependency is now optional

Initial Release

0.1

Publish butane cli