Vim Flash (vscode extension)

Flash jump to anywhere in the editor. Inspired by the neovim flash extension and vscode-extension-flash

Features

vim-flash.jump: start flash jump
vim-flash.cancel: cancel flash jump during input, binding to escape by default
vim-flash.deleteChar: delete one char inputed every time and re-highlight remained input

If you find this extension does not work, add following to your settings.json:
```
  "extensions.experimental.affinity": {
    "vscodevim.vim": 1
  },
```
This setting also improves vscode vim's performance, you might find it helpful to enable it even if you don't use this extension
If you find that escape shortcut of vim-flash.cancel does not work, add following to the end of your keybindings.json:
```
  {
    "key": "escape",
    "command": "flash-jump.cancel",
    "when": "editorTextFocus && vim-flash.active"
  },
```
The order matters here since the latter keybindings have higher priorities.
backspace does work after changing when of extension.vim_backspace shortcut, adding !vim-flash.active:
```
"when": "editorTextFocus && vim.active && !inDebugRepl && !vim-flash.active"
```