- Add a screenshot uri handler
- Enable persistent http connections
- Simple CORS implementatation for the
JSON property uri handler
many changes for the httpd
add special attribute 'ts' to a JSON property reflecting
/sim/time/elapsed-sec
always add timestamp for listener properties
add timestamp for json requests if req param t=y is set
* mongoose updated to 5.3
* first stab at implementing websockets, here a property change listener
websocket. This websocket is at ws://yourhost:yourport/PropertyListener
see FGDATA/Docs/gui/radio.html for an example
add request parameter 'i' and 'd'
if i=y, indent the output to make it human readable
if i is missing or anything else, send the output unformatted to save bandwith
'd' defines recursion depth with a default of 1 to show the requested node
and the immediate childs (if it has any)
call /json/?i=y&d=999 for a complete property tree backup (use with caution!)
Also set the encoding to UTF-8 as required per RFC 4627
