Add 0.5.7 release notes

docs/website/blog/2021-08-22-release-0.5.7.md

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+---
+title: August 2021: 0.5.7 Release
+author: Bryan Phelps
+authorURL: http://twitter.com/bryphe
+---
+
+## What's New
+
+It's been kind of a hectic couple of months for me personally, but there's been a lot of exciting things happening in the project.
+
+### Emoji & Symbols Panel on macOS
+
+TODO: Image / gif
+
+Emojis are easier than ever to type in Onivim 2 on macOS! Zach added an integration to the macOS native emoji panel [#3613](https://github.com/onivim/oni2/pull/3613).
+
+No longer will you have to leave your editor to find that perfect emoji :nerd: 
+
+### Search Improvements
+
+TODO: Image / gif
+
+Zach has also made several improvements to the search pane. Toggleable regex-based search, ability to include or exclude files to search, as well as a case-sensitivity togglehave all been added to the search pane. We hope that these changes make finding text in your project easier!
+
+### Right-click Menus
+
+TODO: Image
+
+Rounding out the changes made by Zach, right-click menus are now supported in Onivim 2!
+
+For now, it's mostly just the setup work, such that we can start incorporating this into new features - but the fact the feature has landed means we can start to integrate more.
+
+Fear not though, Onivim 2 is first and foremost keyboard driven, so there will always be a way to achieve actions via the keyboard.
+
+### Quick-open Binds
+
+Finally, Ryan has added some basic bindings to the quick-open menu (that is the <kbd>Control</kbd>+<kbd>p</kbd> menu on Windows/Linux, <kbd>Command</kbd>+<kbd>P</kbd> menu on macOS). These bindings let you open a file in various ways, instead of just replacing the current buffer (which is the current <kbd>Enter</kbd> behavior).
+
+You can now open in a new horizontal or vertical split, or into a new tab (though that makes more sense with [Vim style tabs](https://onivim.github.io/docs/getting-started/vim-tips#how-do-i-get-the-tabs-to-behave-as-they-do-in-vim)).
+
+The default bindings are:
+- <kbd>Shift</kbd>+<kbd>Enter</kbd>: Open in a new _vertical_ split
+- <kbd>Control</kbd>+<kbd>x</kbd>: Open in a new _horizontal_ split
+- <kbd>Control</kbd>+<kbd>t</kbd>: Open in new tab
+
+These default bindings can be changed, with the commands used listed [here](https://onivim.github.io/docs/configuration/key-bindings#list--menu-commands).
+
+### Titlebar Changes
+
+The titlebar now has the option to pick between our custom Onivim 2 themed title bar, and a default OS themed one. Our custom title bar looks nice, since it can leverage theme colors. However, on some platforms - particularly Windows - the native title bar behaves better. There were some annoying usability bugs with our custom titlebar (windows shortcut keys not working, window overflowing to other screens, etc) - for this reason, the native titlebar is now the default on Windows.
+
+The titlebar style can be adjusted with this configuration option:
+
+```
+"window.titleBarStyle": "custom"
+```
+
+## Bug Fixes
+
+### Vim compatibility changes
+
+Lots of changes went into to solidify and smooth over the connection to `libvim`, the
+Vim heart of Oni2, to help make certain behaviours in Oni2 act more like they do in
+terminal Vim:
+
+ - #3606 - Vim: Fix hang when using `function` in `experimental.viml`
+ - #3607 - Vim: Fix crash when specifying empty guifont (fixes #3605)
+ - #3699 - Vim: Respect silent flag for output-producing commands (fixes #3680)
+ - #3755 - Vim: Fix extra 'editor tab' with `:tabnew`/`:tabedit` (fixes #3150)
+
+### VSCode Extension host changes
+
+Similarly, lots of changes have landed that improve and extend our VSCode extension host
+compatibility. Of note is that whilst some of these issues are "extension specific", we
+aren't special casing any extensions. If we fix a bug with one extension, its very
+likely to help unblock many others as well!
+
+ - #3431 - Extensions: Serialize file system errors correctly to extensions (fixes #3418)
+ - #3637 - Extensions: Unable to enter API key for WakaTime (fixes #3619)
+ - #3571 - Extension: Implement `$tryApplyEdits` (fixes #3545)
+ - #3335 - Extension: Fix selection bounds (fixes #3335)
+ - #3709 - Extension: Fix activation error with nim extension (fixes #3685)
+ - #3746 - Extension: Fix edit application in trailing spaces plugin
+ - #3753 - Extension: Don't bubble up extension runtime errors to notifications
+ - #3745 - Dependency: vscode-exthost -> 1.57.1
+
+The full set of changes is available in the [changelog](https://github.com/onivim/oni2/blob/0cd8c424d5fb0bcdf209070ec3ab6296a3654eba/CHANGES_CURRENT.md). We hope that these help make Onivim 2 even better for you.
+
+## Special Thanks
+
+We had @sijad submit a nice fix for a stuck menu state, fixing an annoying UX issue and
+getting a license key! (#3668).
+
+@eEQK sorted a build issue where Oni2 wasn't building correctly when kicked off a
+certain way.
+
+We also received a few documentation updates this release, which is always very appreciated!
+Updating documentation is something that most people can do and it really helps us out,
+as well as helping out your fellow users!
+
+ - @rogererens - Updating the Visual Mode documentation. (#3601)
+ - @paul-louyot - Filling in some missing parts for the keybinding documentation. (#3626)
+ - @Doerge - Tidying up some dead links in our getting started documentation. (#3740)
+
+## What's Next
+
+As mentioned in the beginning, it's been a challenging couple of months for the project. I'll elaborate a bit more in the next set of release notes.
+
+There are several items that are top of mind for me next, including:
+- Syntax highlighting improvements
+- Code actions / refactoring
+
+Thank you for reading and following the project - huge thanks to everyone who has helped us get here. 
+
+Cheers,
+
+Bryan, Ryan, and Zach