v1.2.18: Attract mode redo two

Changed the attract mode control to, while streaming, the original code that disables it repeatedly while streaming. Then enables a VBI that pounds the setting when done streaming.

Found a bug with the app key saving... it wasn't saving due to an improper handling of return value when opening the key. Ooops.

Changed some diagnostics in yailsrv with respect to counting the number of clients.

v1.2.17.1: Ticked the executable version to match

Somehow I didn't commit the executable that had the version update to match with the YAILSRV updates. This mid release should fix that. No real change other than the version number.

v.1.2.17: Server exit on SIGINT (ctrl-C)

YAILSRV doesn't have a good exit strategy. This is a heavy handed approach that installs a signal handler for SIGINT (ctrl-C) and exits the application, in whatever state it's in, when it receives the signal.

Need to re-work things so that both the asyncio of the DDG handler is properly told to die as well as the rest of the app.

v1.2.16: ATRACT, No FN, Server hang

Fixes a few things:

1. Added a VBI that sets ATRACT (0x4D) to 0. Disables the screen saver color rotation.
2. Added some more checks to the get_settings code that, if sio_openkey returns 0, we just set defaults. This can happen if there is no FN or (I'm assuming) the FN has no SD card.
3. The server did not have a timeout set for the request call. This could cause the server to hang, waiting for a response from the URL. Timeout is now 30 but probably could make it shorter.

v1.2.15: Server and ATR fixes

See commit...

v1.2.14 Random Graphics Mode

Added a way to tell the system to randomly alternate the graphics mode between 8 and 9.

gfx *

The work is performed on the image server side (yailsrv) so it must be updated as well.

v1.2.13: Pause/Resume while streaming

As the commit says...

While streaming:

Hit ENTER to pause, any key to resume.
Any key, while streaming, stops the stream, drops the TCP connection, and brings up the console.

v1.2.12 Fix to streaming a URL

Merge pull request #37 from brad-colbert/showurl_fixes

v1.2.11 The work buffer, that eventually holds the command tokens, was a bit …

v1.2.11 Stream from a specific URL

Merge pull request #35 from brad-colbert/stream_from_url

Stream from url

v1.2.10 Save Graphics Mode to APPKEY

Title is the description... and I'm lazy right now, it's Saturday.