Built-in columns

For common use-cases the following columns are included:

• BooleanColumn – renders boolean values
• Column – generic column
• CheckBoxColumn – renders checkbox form inputs
• DateColumn – date formatting
• DateTimeColumn – datetime formatting in the local timezone
• FileColumn – renders files as links
• EmailColumn – renders <a href="mailto:..."> tags
• LinkColumn – renders <a href="..."> tags (compose a django url)
• TemplateColumn – renders template code
• URLColumn – renders <a href="..."> tags (absolute url)