patch 8.2.3729: no support for squirrels

Problem:    No support for squirrels. (closes #9259)
Solution:   Recognize nuts.
diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 0bc9926..00711d7 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1756,6 +1756,9 @@
 " SQR
 au BufNewFile,BufRead *.sqr,*.sqi		setf sqr
 
+" Squirrel
+au BufNewFile,BufRead *.nut			setf squirrel
+
 " OpenSSH configuration
 au BufNewFile,BufRead ssh_config,*/.ssh/config		setf sshconfig
 au BufNewFile,BufRead */etc/ssh/ssh_config.d/*.conf	setf sshconfig
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 7d739ad..41eb398 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -477,6 +477,7 @@
     \ 'sqlj': ['file.sqlj'],
     \ 'sqr': ['file.sqr', 'file.sqi'],
     \ 'squid': ['squid.conf'],
+    \ 'squirrel': ['file.nut'],
     \ 'srec': ['file.s19', 'file.s28', 'file.s37', 'file.mot', 'file.srec'],
     \ 'sshconfig': ['ssh_config', '/.ssh/config', '/etc/ssh/ssh_config.d/file.conf', 'any/etc/ssh/ssh_config.d/file.conf', 'any/.ssh/config'],
     \ 'sshdconfig': ['sshd_config', '/etc/ssh/sshd_config.d/file.conf', 'any/etc/ssh/sshd_config.d/file.conf'],
diff --git a/src/version.c b/src/version.c
index 0aadf4b..2923f2d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3729,
+/**/
     3728,
 /**/
     3727,