Release 4.20.0 💎

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Show date of posts (#2526)

* add date to read-time.html

* add option for show_date, dynamic icon style

* change read-time to post__meta

* cleanup post__metal.html

* cleanup post__meta include variables

* put date before read time

* remove space in include variable

* allow customisation of post__meta separator

* add some documentation

* oops fix typo derp

* add post date image

* change page meta separator customisation to CSS

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remove hidden posts from `/posts` (#2625)

Update documentation for #2621 (#2624)

* Update documentation for #2621

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* Update last_modified_at

Update UI text for zh-CN and zh-TW (#2626)

* Update UI text for zh-CN and zh-TW

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Not touching last_modified_at this time - it's messy enough

Merge branch 'master' of https://github.com/mmistakes/minimal-mistakes

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Configure entries layout `list` or `grid` (#2616)

* Configure entries layout `list` or `grid`

This allows to use grid layout on `page.entries_layout` on the home layout.

Included a break since when using grid the post images are too close to the horizontal line bellow `posts` text.

There's a entries div now surrounding the posts since the first row of the grid was having a slight padding on the left. The home now behaves like posts/categories/tags pages with grid but including the paginator.

For best results on desktop use `classes: wide` and `paginate: 4` on `_config.yml` (or multiples of 4 if you want more rows)

* Fix indent

* Archive subtitle leaves space on the bottom

* Now space is added through style

Use layout: none instead of null (#2617)

* Use layout: none instead of null

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Update zh-cn (#2576)

* Update zh-cn
* Update ui-text.yml

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Fix link for author name (#2575)

Missed from f68b54e53f9973047d80c1d4fc418f89f6a8689c

Change tab indent to space for consistency (#2614)

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Fix config comment to list all analytics providers. (#2607)

The main config was properly updated with the google-gtag
feature commit (0ff9dcc8936b3a438f9125d34e635b8b54ee280a), but was
removed, possibly by bad merge, with an unrelated commit
(53f0c03c7969e83bb53bf9fd64499c711c4029ed) two days later.

The docs and test configs appear to have never received the initial
google-gtag update.

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Give H4 in notice some space from below (#2602)