Added table highlight to autoformat blacklist

mattly/vim-markdown-enhancements defines a highlight for tables in markdown. We can use that to avoid inadvertent reformat of those tables by not enabling autoformat in those tables.

autoload/pencil.vim

@@ -54,7 +54,7 @@ fun! s:imap(preserve_completion, key, icmd)
 endf
 
 fun! s:enable_autoformat()
-  " don't enable autoformat if in a code block (TODO or table)
+  " don't enable autoformat if in a code block or table
   let l:okay_to_enable = 1
   for l:sid in synstack(line('.'), col('.'))
     if match(synIDattr(l:sid, 'name'),

plugin/pencil.vim

@@ -37,6 +37,7 @@ if !exists('g:pencil#autoformat_blacklist')
   "'markdownCode', 'markdownHighlight[A-Za-z0-9]+' (tpope/vim-markdown)
   "'mkdCode', 'mkdIndentCode' (plasticboy/vim-markdown)
   "'markdownFencedCodeBlock', 'markdownInlineCode' (gabrielelana/vim-markdown)
+  "'mmdTable[A-Za-z0-9]*' (mattly/vim-markdown-enhancements)
   "'txtCode' (timcharper/textile.vim)
   let g:pencil#autoformat_blacklist = [
         \ 'markdownCode',
@@ -45,6 +46,7 @@ if !exists('g:pencil#autoformat_blacklist')
         \ 'mkdIndentCode',
         \ 'markdownFencedCodeBlock',
         \ 'markdownInlineCode',
+        \ 'mmdTable[A-Za-z0-9]*',
         \ 'txtCode',
         \ ]
 en