* Create server-sent-events.js
* Create sse-change-listener.js
* Implement server sent events
* Convert to ES5 and wrap in function
* Use the host string from tiddlyweb
* Improve comments in sse-server.js
* Can't use object reference as key
* Add retry timeout
* Fix a bug
* bug fix
* Fix formatting
* Fix ES5 compat
* capitalize comments
* more fixes
* Refactor tiddlywek/sse-server.js
* Extract helper functions for handling wikis and connections.
* Replace JSDoc comments.
* Fix formatting according to TW core.
* Simplify the logic for adding and removing connections.
* Fix formatting of tiddlyweb/sse-client.js
Fix formatting according to TW core.
* Fix formatting of server-sent-events.js
Fix formatting and comments following TW core guidelines.
* Extract a debounce function in sse-client.js
* Avoid using startsWith in server-sent-events.js
startsWith is part of ES2015, while TiddlyWiki uses the 5.1 dialect.
* New sse-enabled WebServer parameter
* If not set to "yes", disabled SSE request handling.
* Add documentation for the parameter in core/language/en-GB/Help/listen.tid
* Add new tiddler editions/tw5.com/tiddlers/webserver/WebServer Parameter_ sse-enabled.tid
* Disable polling for changes if SSE is enabled
* Add sse_enabled to /status JSON response
* Store syncer polling status in $:/config/SyncDisablePolling
* Handled disabling polling in core/modules/syncer.js
* Simply boolean logic in syncer.js
* Delete trailing whitespaces in syncer.js
Co-authored-by: Arlen22 <arlenbee@gmail.com>