type_scopes

This version brings the following new features :

• Add negative string scopes
• Add sensitive options to string scopes
• Add column_matches scope to handle regex
• Existing scopes are not overridden any more
• Queries are generated with Arel instead of raw SQL

This release adds automatically 3 new ActiveRecord scopes for dates and numerics columns :

Transaction.amount_not_between(100, 200)
# => where("amount NOT BETWEEN 100 AND 200")

Transaction.amount_within(100, 200)
# => where("amount > 100 AND amount < 200")

Transaction.amount_not_within(100, 200)
# => where("amount <= 100 OR amount >= 200")