[skip ci]

[ci skip] ✂ blank lines between list items.

[ci skip]

/cc @sgrif @zzak

Conflicts:
	activerecord/CHANGELOG.md

I think "What" is was fine, "The purpose of" assumes the reader knows such thing exists.
"What is" is fine, and also matches the following "What is require_dependency".

4.2.0", then they should have no problems hacking with Rails. [ci skip]

If they do, then its a bug and it should be reported.

Improving tips about installation in the guides [ci skip]

[ci skip]

Conflicts:
	guides/source/constant_autoloading_and_reloading.md

Counter cache Rails guides fix

Adding method chaining section on ActiveRecord querying guide [ci skip]

[ci skip]

Improve autoload_paths section [ci skip]

You need to specify the counter_cache option on the has_many side of the association when using a custom counter cache column. This is documented on the has_many association here: http://apidock.com/rails/ActiveRecord/Associations/ClassMethods/has_many [ci skip]

Minor typos/fixes to autoloading guide

@fxn Great job with the guide, I read it all! Yeah!

Some paragraphs might be restructured, but I'll leave that to you
since you are currently working on it. This commit only includes
some minor typos and commas that in my opinion clarify the reading.

[ci skip]

This reverts commit c2fe0938.

Don't convert empty arrays to nils when deep munging params

Dynamic finders already deprecated [ci skip]

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Follow-up to previous commit

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Fix previous merge

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[skip ci]

fix a typo [ci skip]

Fix Duplicate web-console entries in Gemfile

Fix minor typos in autoloading guide [ci skip]

[ci skip]