Allow a post to contain only a quote (#3577)

* allow posts with only a quote

* bump version while we're at it

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bsky.app",
-  "version": "1.78.0",
+  "version": "1.79.0",
   "private": true,
   "engines": {
     "node": ">=18"

src/view/com/composer/Composer.tsx

@@ -214,7 +214,12 @@ export const ComposePost = observer(function ComposePost({
 
     setError('')
 
-    if (richtext.text.trim().length === 0 && gallery.isEmpty && !extLink) {
+    if (
+      richtext.text.trim().length === 0 &&
+      gallery.isEmpty &&
+      !extLink &&
+      !quote
+    ) {
       setError(_(msg`Did you want to say anything?`))
       return
     }