Common functions/items employed through the derive-sql crates and associated

derive-sql

The project contains the following:

• derive-sql: the root of the derive-sql library as published on crates.io. Defines the trait Sqlable.
• extras/derive-sql-sqlite: the package with the implementation of the DeriveSqlite macro that implement the Sqlable trait based on a struct with named fields.
• extras/derive-sql-mysql: the package with the implementation of the DeriveMysql macro that implement the Sqlable trait for MySQL based on a struct with named fields.

Publishing

Use script publish.sh to publish all crates - remember to update OLD_VERSION and NEW_VERSION in the file before running!