Update goyo.vim and vim-zenroom2.

sources_non_forked/goyo.vim/.gitattributes

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+.gitattributes export-ignore
+.gitignore     export-ignore
+doc/tags       export-ignore
+*.md           export-ignore
+zip            export-ignore
+test/*         export-ignore

sources_non_forked/goyo.vim/.gitignore

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+doc/tags

sources_non_forked/goyo.vim/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2013-2021 Junegunn Choi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

sources_non_forked/goyo.vim/README.md

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+goyo.vim ([고요](http://en.wiktionary.org/wiki/고요하다))
+=========================================================
+
+Distraction-free writing in Vim.
+
+![](https://raw.github.com/junegunn/i/master/goyo.png)
+
+(Color scheme: [seoul256](https://github.com/junegunn/seoul256.vim))
+
+Best served with [limelight.vim](https://github.com/junegunn/limelight.vim).
+
+Installation
+------------
+
+Use your favorite plugin manager.
+
+- [vim-plug](https://github.com/junegunn/vim-plug)
+  1. Add `Plug 'junegunn/goyo.vim'` to .vimrc
+  2. Run `:PlugInstall`
+
+Usage
+-----
+
+- `:Goyo`
+    - Toggle Goyo
+- `:Goyo [dimension]`
+    - Turn on or resize Goyo
+- `:Goyo!`
+    - Turn Goyo off
+
+The window can be resized with the usual `[count]<CTRL-W>` + `>`, `<`, `+`,
+`-` keys, and `<CTRL-W>` + `=` will resize it back to the initial size.
+
+### Dimension expression
+
+The expected format of a dimension expression is
+`[WIDTH][XOFFSET][x[HEIGHT][YOFFSET]]`. `XOFFSET` and `YOFFSET` should be
+prefixed by `+` or `-`. Each component can be given in percentage.
+
+```vim
+" Width
+Goyo 120
+
+" Height
+Goyo x30
+
+" Both
+Goyo 120x30
+
+" In percentage
+Goyo 120x50%
+
+" With offsets
+Goyo 50%+25%x50%-25%
+```
+
+Configuration
+-------------
+
+- `g:goyo_width` (default: 80)
+- `g:goyo_height` (default: 85%)
+- `g:goyo_linenr` (default: 0)
+
+### Callbacks
+
+By default, [vim-airline](https://github.com/bling/vim-airline),
+[vim-powerline](https://github.com/Lokaltog/vim-powerline),
+[powerline](https://github.com/Lokaltog/powerline),
+[lightline.vim](https://github.com/itchyny/lightline.vim),
+[vim-signify](https://github.com/mhinz/vim-signify),
+and [vim-gitgutter](https://github.com/airblade/vim-gitgutter) are temporarily
+disabled while in Goyo mode.
+
+If you have other plugins that you want to disable/enable, or if you want to
+change the default settings of Goyo window, you can set up custom routines
+to be triggered on `GoyoEnter` and `GoyoLeave` events.
+
+```vim
+function! s:goyo_enter()
+  if executable('tmux') && strlen($TMUX)
+    silent !tmux set status off
+    silent !tmux list-panes -F '\#F' | grep -q Z || tmux resize-pane -Z
+  endif
+  set noshowmode
+  set noshowcmd
+  set scrolloff=999
+  Limelight
+  " ...
+endfunction
+
+function! s:goyo_leave()
+  if executable('tmux') && strlen($TMUX)
+    silent !tmux set status on
+    silent !tmux list-panes -F '\#F' | grep -q Z && tmux resize-pane -Z
+  endif
+  set showmode
+  set showcmd
+  set scrolloff=5
+  Limelight!
+  " ...
+endfunction
+
+autocmd! User GoyoEnter nested call <SID>goyo_enter()
+autocmd! User GoyoLeave nested call <SID>goyo_leave()
+```
+
+More examples can be found here:
+[Customization](https://github.com/junegunn/goyo.vim/wiki/Customization)
+
+Inspiration
+-----------
+
+- [LiteDFM](https://github.com/bilalq/lite-dfm)
+- [VimRoom](http://projects.mikewest.org/vimroom/)
+
+Pros.
+-----
+
+1. Works well with splits. Doesn't mess up with the current window arrangement
+1. Works well with popular statusline plugins
+1. Prevents accessing the empty windows around the central buffer
+1. Can be closed with any of `:q[uit]`, `:clo[se]`, `:tabc[lose]`, or `:Goyo`
+1. Can dynamically change the width of the window
+1. Adjusts its colors when color scheme is changed
+1. Realigns the window when the terminal (or window) is resized or when the size
+   of the font is changed
+1. Correctly hides colorcolumns and Emojis in statusline
+1. Highly customizable with callbacks
+
+License
+-------
+
+MIT
+