Implement row0-border.

MODULES.md

@@ -711,6 +711,8 @@ substituted.
                    [#:table-border #f]
                    [#:row-border #f]
                    [#:col-border #f]
+                   [#:row0-border #f]
+                   [#:col0-border #f]
                    [#:border-style (*table-border-style*)]
                    [#:ansi #f])
 
@@ -718,6 +720,8 @@ substituted.
 * ```#:table-border``` - if ```#t```, the table has outer border
 * ```#:row-border``` - if ```#t```, the rows are separated by borders
 * ```#:col-border``` - if ```#t```, the columns are separated by borders
+* ```#:row0-border``` - if ```#t```, the first row is separated by border
+* ```#:col0-border``` - if ```#t```, the first column is separated by border
 * ```#:border-style``` - which border style to use (see
   ```*table-border-style*``` which is the default)
 * ```#:ansi``` - if ```#t```, all cell line strings are terminated

table.scm

@@ -259,6 +259,8 @@
 	 (let* ((table-border (get-keyword #:table-border args (lambda () #f)))
 		(row-border (get-keyword #:row-border args (lambda () #f)))
 		(column-border (get-keyword #:col-border args (lambda () #f)))
+		(row0-border (get-keyword #:row0-border args (lambda () #f)))
+		(col0-border (get-keyword #:col0-border args (lambda () #f)))
 		(border-style (get-keyword #:border-style args (lambda () (*table-border-style*))))
 		(ansi? (get-keyword #:ansi args (lambda () #f)))
 		(stylepair (assq border-style table-borders-lookup))
@@ -293,8 +295,10 @@
 		    (flatten (reverse res0))
 		    "\n"))
 		 (let* ((res0
-			 (if (and row-border
+			 (if (or (and row-border
 				      (> idx 0))
+				 (and row0-border
+				      (= idx 1)))
 			     (cons (table-row-delimiter/styled table-border
 							       column-border
 							       cws