[SDL 0238] Keyboard Enhancements

[theresalech]

Proposal: Keyboard Enhancements

This proposal is about adding a new keyboard layout and adding new properties for keyboards supported by SDL. The following keyboard enhancements are discussed in this proposal.

Enhancement #1: Support for Numeric Keyboard.

Enhancement #2: Allow apps to mask entered characters.

Enhancement #3: Allow apps to change special characters shown on the keyboard layout.

Review: smartdevicelink/sdl_evolution#754

Steering Committee Decision:

The Steering Committee voted to accept this proposal with the revisions outlined in this comment from the author. The project maintainer also agreed to the author's point regarding INVALID_DATA (12).

The proposal .md file was updated to reflect these revisions on 7/22/19.

[jordynmackool]

The proposal markdown file has been updated per the revisions included in the accepted with revisions review issue: Revise SDL-0238 Keyboard Enhancements.

Accepted revisions can be reviewed in the merged PR here: smartdevicelink/sdl_evolution#1117.

[jacobkeeler]

Closing with the merge of #474