Use short-form for the scaffold render calls and drop the needless test
Dont encourage aliases now that we have variants
Dont abbreviate that which needs no abbreviation
Updates the maintenance policy with new Rails versions
Merge pull request #14647 from matiaskorhonen/updates-maintenance-policy

Updates the maintenance policy with new Rails versions
new CHANGELOGs entries are in the top [ci skip]
Fixed problem where `1.day.eql?(1.day)` is false

This fixes:
    1.second.eql?(1.second) #=> false

The new `eql?` requires that `other` is an `ActiveSupport::Duration`.
This requirement makes `ActiveSupport::Duration`'s behavior consistent
with other numeric types in Ruby.

    1.eql?(1.0) #=> false
    1.0.eql?(1) #=> false

    1.second.eql?(1) #=> false (was true)
    1.eql?(1.second) #=> false

    { 1 => "foo", 1.0 => "bar" }
    #=> { 1 => "foo", 1.0 => "bar" }

    { 1 => "foo", 1.second => "bar" }
    # now => { 1 => "foo", 1.second => "bar" }
    # was => { 1 => "bar" }

And though the behavior here hasn't changed, for reference:

    1 == 1.0 #=> true
    1.0 == 1 #=> true

    1 == 1.second #=> true
    1.second == 1 #=> true
Guides: minor typo fixed [ci skip]
Merge pull request #14652 from Emily/duration_eqls

Fixed problem where `1.day.eql?(1.day)` is false
Merge pull request #14653 from vdmgolub/patch-1

Guides: minor typo fixed in Asset Pipeline guide
upgrading section for 4.1 is no longer WIP. [ci skip]