Update gemspec to support Rails 4.0
Update Gemfile so the Rails requirements match the updated gemspec for Rails 4.0 support
fix comparison of Gem::Version with String failed
Remove removed options passed to assign_attributes method
Add 'without_protection' option. It is ignore the ActiveRecord::UnknownAttributeError
update to work with default scope
do validation at record.save
output validation error messages when validate failed
fix typo of b4d8891b47ce6ce9070df271a245d2a7e0dbd1c8
Deals with an empty string as NULL and Supports ISO8601 format datetime
Merge pull request #1 from ttakakiaktsk/4.0.0

Deals with an empty string as NULL and Supports ISO8601 format datetime
Don't update created_at and updated_at. Time zone according to the input value.
Merge branch 'release/3.0.0'