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Use explicit delegation instead of method aliasing for AR::Base.to_param -> AR::Base.id. (closes #5299)


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Make sure regexp chunks are grouped when the segment has a regexp constraint so that captures are counted correctly (closes #5267)


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Refactored ActiveRecord::Base.to_xml to become a delegate for XmlSerializer, which restores sanity to the mega method. This refactoring also reinstates the opinions that type="string" is redundant and ugly and nil-differentiation is not a concern of serialization [DHH]

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Fixed that Module#alias_method_chain should work with both foo? foo! and foo at the same time (closes #4954) [anna@wota.jp]

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Added uninstall.rb hook to plugin handling, such that plugins have a way of removing assets and other artifacts on removal (closes #5003) [takiuchi@drecom.co.jp]

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Added simple hash conditions to find that'll just convert hash to an AND-based condition string (closes #5143) [hcatlin@gmail.com]

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Fixed issues with BLOB limits, charsets, and booleans for Firebird (closes #5194, #5191, #5189) [kennethkunz@gmail.com]

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Fixed usage of :limit and with_scope when the association in scope is a 1:m (closes #5208) [alex@purefiction.net]

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Fixed migration trouble with SQLite when NOT NULL is used in the new definition (closes #5215) [greg@lapcominc.com]

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Fixed that count distinct should use the selected column even when using :include (closes #5251) [anna@wota.jp]

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Fixed that has_many.create ended up with duplicate objects (closes #5250) [daniel@nouvelles-solutions.com]

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Fixed that :includes merged from with_scope won't cause the same association to be loaded more than once if repetition occurs in the clauses (closes #5253) [alex@purefiction.net]

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Rewind readable CGI params so others may reread them (such as CGI::Session when passing the session id in a multipart form). Closes #210.

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