The fix commited in e2a070cf was returning the `new_target`, as
a try to return whatever user replaced association with. The
problem is, the resulting association target may be ordered
differently. In such case we want to return the target that
will be later used for that association.

Increase numeric-timestamp precision to nanoseconds

Tidied and standardised text_helper implementations.

Redirect route inspect

This commit fixes route inspection in `rake routes`

Before:

  foo  /foo(.:format) :controller#:action"

After:

  foo  /foo(.:format)  Redirect (301)

wrap time ranges with timezones

Fix warning: possibly useless use of % in void context

Fix build: can't convert Regexp to String

Bug #6289

NumberHelper.number_with_delimiter should html_escape both delimiters and separators

reverting decoupling of NumberHelper from safe_join and adding tests for escaping of delimiters and separators

Refactor migration generator

doesn't modify params in SafeBuffer#%

when we pass fractional usec to Time methods we should use Rational
instead of Float because of accuracy problem

    Time.local(2011,6,12,23,59,59,999999.999).nsec
    # => 999999998

    Time.local(2011,6,12,23,59,59,Rational(999999999, 1000)).nsec
    # => 999999999

AS::Callbacks: fix run_callbacks for objects with negative id

Add some common Array methods to the middleware stack

Render img tag with empty src if empty string is passed to image_tag.

The docs suggest that the middleware stack is an Array, so I've added
the unshift method to it. Originally I added some more Array methods,
but it was agreed that they lacked usecases.

Add HTML5 input[type="time"] helper

Removed old text_helper apis for highlight, excerpt and word_wrap

Fix incorrect assert_block -> assert conversion. Assumed too much from the MiniTest deprecation message.