[bug] `r <Tab>` does nothing

[AlexGuo1998]

If you want to change a character to <Tab> in vim, you could type r <Tab>.
However in vim-mode-plus, this does nothing but hides the cursor (until re-open buffer).

This is useful when formatting code.
For example: changing space in #define abc 123 to tab, to make it tidy.

debug info

{
  "atom": "1.33.0",
  "platform": "win32",
  "release": "10.0.17763",
  "vmpVersion": "1.36.0",
  "vmpConfig": {
    "smoothScrollOnRedrawCursorLine": true,
    "smoothScrollOnRedrawCursorLineDuration": 100,
    "updateRegisterOnChangeOrSubstitute": true,
    "useClipboardAsDefaultRegister": false,
    "useSmartcaseForSearch": true
  }
}

atom --version:

Atom    : 1.33.0
Electron: 2.0.11
Chrome  : 61.0.3163.100
Node    : 8.9.3

vim-mode-plus version: 1.36.0

OS version: Windows 10 Professional 64bit, 1809 (17763.134)

Checklist

You have to check all before open issue.

• Provide your environment info clipped by Vim Mode Plus: Clip Debug Info command.
• Try with latest Atom and latest vim-mode-plus.
• Pick a descriptive and non-ambiguous subject
• Express "what" you want(feature? config option?, behavior change?) in short sentence(not long!).
• Contrast current behavior if you want to change current behavior, with sample text, operation(keystroke) and result.
• Include real use case so that maintainer can understand "why" you need help.
• Include Atom(atom --version), vim-mode-plus version, and OS version(e.g. macOS Sierra 10.12.3).
• If keybinding issue, Read this.