Update version check

#100

M  plugin/addons.vim
M  plugin/vimcomplete.vim

Author: girishji

plugin/addons.vim

@@ -1,4 +1,5 @@
-if !has('vim9script') || v:version < 901
+if !has('vim9script') || v:versionlong < 9010646
+    echoerr "VimComplete: Needs Vim 9.1.0646 or higher"
     finish
 endif
 

plugin/vimcomplete.vim

@@ -1,4 +1,5 @@
-if !has('vim9script') || v:version < 901
+if !has('vim9script') || v:versionlong < 9010646
+    echoerr "VimComplete: Needs Vim 9.1.0646 or higher"
     finish
 endif