Allow has_many :through associations to find the source association by setting a custom class (closes #4307) [jonathan@bluewire.net.nz]

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Eager Loading support added for has_many :through => :has_many associations (see below).  [Rick Olson]

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Raise error when trying to select many polymorphic objects with has_many :through or :include (closes #4226) [josh@hasmanythrough.com]

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Nil charset caused subject line to be improperly quoted in implicitly multipart messages (closes #2662)


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Parse content-type apart before using it so that sub-parts of the header can be set correctly (closes #2918)


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Fixed has_many :through to include :conditions set on the :through association. closes #4020 [jonathan@bluewire.net.nz]

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Use the full template file name for implicitly selected templates, instead of requiring AV to try to detect it (which is broken for this use case) (closes #4297)


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Fix that has_many :through honors the foreign key set by the belongs_to association in the join model (closes #4259) [andylien@gmail.com / Rick]

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Added test for Accept header for xml_http_request calls in functional tests (closes #4222) [agkr@pobox.com]

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Removed XML argument style for respond_to, so type.xml(object.to_xml) no longer works -- it wasnt worth the exception

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Fixed that eager loading from belongs_to would cause the association to be double-singularized (closes #4117) [jonathan@bluewire.net.nz]

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Added easy support for testing file uploads with fixture_file_upload (closes #4105) [turnip@turnipspatch.com]

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Added 'port open?' check to the spawner when running in repeat mode so we don't needlessly boot the dispatcher if the port is already in use anyway #4089 [guy.naor@famundo.com]

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Fixed UrlHelper#current_page? to behave even when url-escaped entities are present (closes #3929) [jeremy@planetargon.com]

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