Add missing imports

src/views/timeline.nim

@@ -1,4 +1,4 @@
-import strutils, strformat, algorithm, times
+import strutils, strformat, sequtils, algorithm, times
 import karax/[karaxdsl, vdom, vstyles]
 
 import ../types, ../search

src/views/tweet.nim

@@ -1,4 +1,4 @@
-import strutils
+import strutils, sequtils
 import karax/[karaxdsl, vdom, vstyles]
 
 import ../types, ../utils, ../formatters