Add scaling options to BigFig.

packages/Boxout.sty

@@ -53,7 +53,7 @@
 	% #2: Label, passed to @boxout argument #1.
 	>{\TrimSpaces}m
 	% #3: Caption.
-	m
+	O{}
 	% #4: Body, passed to @boxout.
 	+b
 }{%
@@ -88,7 +88,7 @@
 	% #2: Label, passed to Boxout argument #1.
 	>{\TrimSpaces}m
 	% #3: Caption, passed to Boxout argument #3.
-	m
+	O{}
 	% #4: Body, passed to Boxout.
 	+b
 }{
@@ -102,7 +102,7 @@
 		\begin{Boxout}[%
 			innerspec:e	= \l_Boxout_innerspec_tl,
 			warning:e	= \bool_to_str:N \l_Boxout_warning_bool,
-		]{#2}{#3}
+		]{#2}[#3]
 			#4
 		\end{Boxout}
 	\end{BigFloat}
@@ -134,7 +134,7 @@
 	% #2: Label.
 	>{\TrimSpaces}m
 	% #3: Caption
-	m
+	O{}
 	% #4: Body.
 	+b
 }{%
@@ -144,7 +144,7 @@
 			\begin{Boxout}[
 				innerspec:e	= \l_Boxout_innerspec_tl,
 				warning:e	= \bool_to_str:N \l_Boxout_warning_bool,
-			]{#2}{#3}%
+			]{#2}[#3]%
 				#4%
 			\end{Boxout}%
 		\end{minipage}%