v1.1.1: Merge pull request #102 from mavenlink/optimize-count

Add Brainstem.mysql_use_calc_found_rows boolean config option to utilize MySQL's FOUND_ROWS() functionality to avoid issuing a new query to calculate the record count, which has the potential to up to double the response time of the endpoint.

For more details, see: #102

v1.0.0.pre.1

• Implemented new presenter DSL.
• Added controller helpers for presenting errors.
• Added support for optional fields.
• Added support for filtering in conjunction with your search implementation.
• Added support for defining lookup caches for dynamic fields.
• Fixed: documentation for default filters.
• Fixed: ambiguity of brainstem_key for presenters that present multiple classes.
• Fixed: non-deterministic order when sorting records with identical sortable fields (updated_at, for instance).