style: format zsh and markdown to zinit convention (zdharma-continuum#8)

* style: format zsh & markdown files and update copyright notice

Signed-off-by: Vladislav Doster <[email protected]>

CHANGELOG.md

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+## 14-07-2020
+
+- If an `[…]` string will occur in the search query, it'll be interpreted as pattern. So that it's
+  possible to enter as the search query e.g.: `print ["a-zA-Z0-9_-]` or `print [^[:alpha:]]`, etc.
+
+## 28-10-2019
+
+- `^` – if first – matches beginning of the command's string, $ – if last – its end. So that it's
+  possible to enter `'^ls'` and have only commands starting with `ls` matched.
+
+## 25-05-2018
+
+- Hash holding paths that shouldn't be grepped (globbed) – blacklist for slow disks, mounts, etc.:
+
+  ```zsh
+  typeset -gA FAST_BLIST_PATTERNS
+  FAST_BLIST_PATTERNS[/mount/nfs1/*]=1
+  FAST_BLIST_PATTERNS[/mount/disk2/*]=1
+  ```
+
+## 13-06-2017
+
+- Canceling search doesn't clear entered query. Change to previous behavior via:
+
+  ```zsh
+  zstyle ":plugin:history-search-multi-word" clear-on-cancel "yes"
+  ```
+
+## 12-04-2017
+
+- Page size can be relative to screen height, e.g.:
+
+  ```zsh
+  zstyle ":history-search-multi-word" page-size "LINES/4"
+  ```
+
+## 05-04-2017
+
+- 17% performance optimization
+
+## 27-01-2017
+
+- Input-driven case-sensivity of search – if your query contains capital latin letters, search will
+  be case-sensitive
+
+## 12-11-2016
+
+- HSMW can now show context of selected history entry! Just hit `Ctrl-K`,
+  [video](https://asciinema.org/a/92516)
+- More performance optimizations
+
+## 31-10-2016
+
+- Newlines do not disturb the parser anymore, and are also highlighted with a dark color –
+  [video](https://asciinema.org/a/91159)
+
+## 27-10-2016
+
+- New optimizations – **30%** speed up of syntax highlighting!
+- Architectural change – syntax highlighting is now computed rarely, so any possible performance
+  problems are now solved, in advance!
+
+## 24-10-2016
+
+- Workaround for Zsh versions like 5.0.2 has been added – **Ctrl-V** and **ESC** cancel search. On
+  such Zsh versions Ctrl-C might not work. Fully problem-free Zsh version will be the upcoming 5.3,
+  where I have together with Zsh Hackers fully fixed the Ctrl-C issue.
+
+## 22-10-2016
+
+- Search process has been optimized by 20%! History sizes like 100000 are now supported.
+- Active history entry can be `underline`, `standout` (i.e. inverse video), `bold`, `bg=blue`, etc.
+  with the new Zstyle `:plugin:history-search-multi-word / active` (see Zstyles section) –
+  [video](https://asciinema.org/a/90214).
+
+## 16-10-2016
+
+- More optimizations of syntax highlighting (40% in total for the two days) – new video above.
+
+## 15-10-2016
+
+- The compact, already optimized (by me)
+  [zsh-syntax-highlighting](https://github.com/zsh-users/zsh-syntax-highlighting) part has been
+  further optimized by 21%! Also, more tokens are highlighted – variable expressions like
+  `"${(@)var[1,3]}"` (when quoted).
+
+## 11-10-2016
+
+- Syntax highlighting of history – adapted, fine crafted, **small** part of
+  [zsh-syntax-highlighting](https://github.com/zsh-users/zsh-syntax-highlighting) to color what
+  `hsmw` shows:
+
+  ![syntax highlighting](http://imagizer.imageshack.us/a/img921/1503/bMAF59.gif)
+
+## 20-09-2016
+
+- Keys Page Up and Page Down work and page-wise move along history. Also, `Ctrl-P`, `Ctrl-N` move to
+  previous and next entries.
+
+## 19-09-2016
+
+- Better immunity to [zsh-autosuggestions](https://github.com/zsh-users/zsh-autosuggestions) and
+  [zsh-syntax-highlighting](https://github.com/zsh-users/zsh-syntax-highlighting) – home, end, left
+  and right cursor keys now work smoothly.
+
+## 25-05-2016
+
+- Cooperation with [zsh-autosuggestions](https://github.com/zsh-users/zsh-autosuggestions) plugin
+
+- Configuration option to set page size, example use:
+
+  ```zsh
+  zstyle ":history-search-multi-word" page-size "5"
+  ```