Updated 3.2.x link [ci skip]
Update I18n guide to note the additional features of the `translate` view helper
Update 3_2_release_notes.md

Code style adherence
Fixes typo
Update 4_0_release_notes.md

Code Highlighted
warning about saving models with dirty attributes

See #8328
Fixed URL link to rendered_component plugin [ci skip]
rephrase the overriding views part about the view path

See rails/rails#12608
fix typo introduced when searching in markdown document with vim
guides/rails_on_rack: Fix formatting of _Internal Middleware Stack_ section
Hstore and JSON fields are not supported with store

The use of `store` on Hstore fields (for instance) is not needed
because serialization aimed to interact with Ruby objects and not
with provided field types
exists? is deprecated in ruby trunk [ci skip]

see here 4d4ff531b8807ee88a3fc46875c7e76f613956fb
Fixed code syntax for config.ru [ci skip]
refine usage docs of `store` in combination with `hstore` and `json`.

refs #11561 #12700
Update Rails initialization guide to explain how bin/rails is executed
add autoload :TransactionState to fix Marshal.load issues
revised changelog comment to be less than 80 chars
Standardize all JSON encoded times to use 3 decimal fractional seconds
Merge pull request #12228 from ersatzryan/standardize-json-time-formats

Standardize all JSON encoded times to use 3 decimal fractional seconds
Merge branch 'master' of github.com:rails/docrails