quill.getText() fails when using Bangla - QWERTY keyboard

[haugstrup]

The space character is not handled correctly in the internal Quill storage when using Bangla - QWERTY keyboard layout.

Steps for Reproduction

1. Install Bangla - QWERTY keyboard on a mac (System Prefs -> Input sources -> Search for "bengali")
2. Switch to the Bangla - QWERTY keyboard
3. Visit http://codepen.io/anon/pen/PmbbXW -- this is the Quill playground, but it outputs quill.getText() on every text-change
4. Type "bvo" -- observe that বড়ো় is present in both the editor and below
5. Hit the space key (optionally followed by another bvo sequence for a really messy result)

Expected behavior:

quill.getText() should match the visual strings in the editor

Actual behavior:

Looks like the space character is inserted before the o character (o being some sort of vowel modifier). The space should be inserted after the o modifier character and all will be well. I think.

Platforms:

Mac OS X Sierra. Latest versions of Chrome, Safari and Firefox.

Version:

1.2.4

[haugstrup]

I'm happy to spend time troubleshooting and creating a PR to fix this issue, but I don't know where to start in Quill!