Breezeblocks

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Adds DML functionality. New builders and new operations for database inserts,
updates, and deletes have been added. They are accessible from the Database
class just like the query builder.

The new builders use a similar interface to the query builder, and the new
operations use a similar interface to the query.

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Divide the responsibilities of building and representing a query between two
classes, Query and the new QueryBuilder.

If upgrading from a previous version, please review the Query and QueryBuilder
classes. When building a query, query_builder.get() must now be invoked to
get a usable query object.

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Introduces the Column Collection concept to the code, and starts using its
implementation in tables, joins, and queries.

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Query functionality covers enough possibilities of the SQL language to meet
most anticipated developer needs.