Fix download link

Signed-off-by: Stephen Celis <stephen@stephencelis.com>
Add a better example of iteration row access

We should show how we can access data where we can (rather than hide
behind a println).

Signed-off-by: Stephen Celis <stephen@stephencelis.com>
Documentation fixes

 - Remove private transaction function documentation.

 - Add public savepoint function documentation.

 - Clarity: savepoints aren't quite transactions.

Signed-off-by: Stephen Celis <stephen@stephencelis.com>
Playground cleanup

Just a little bit of editing.

Signed-off-by: Stephen Celis <stephen@stephencelis.com>
Add lazy, chained query builder

This commit brings the expressiveness of Active Record query building to
SQLite.swift.

Signed-off-by: Stephen Celis <stephen@stephencelis.com>
Update playground with Query examples

Edits throughout. Let's also change "example.com" to a better example.
There's no need for boring domain names in unnetworked code.

Also: an indentation fix for one of the fragment files. Consistency!

Signed-off-by: Stephen Celis <stephen@stephencelis.com>