Migrate PR 10 from GitHub

https://github.com/bit-badger/Giraffe.Htmx/pull/10

src/ViewEngine.Htmx/Htmx.fs

@@ -317,6 +317,7 @@ module HxVals =
     /// Create values from a list of key/value pairs
     let From = toJson
 
+
 /// Attributes and flags for htmx
 [<AutoOpen>]
 module HtmxAttrs =
@@ -438,6 +439,12 @@ module HtmxAttrs =
     /// Establishes a WebSocket or sends information to one
     let _hxWs         = attr "hx-ws"
 
+    /// The name of the message to swap into the DOM.
+    let _sseSwap      = attr "sse-swap"
+
+    /// The URL of the SSE server.
+    let _sseConnect   = attr "sse-connect"
+
 
 /// Script tags to pull htmx into an web page
 module Script =