Add ^boolean typehints to matrix? and point? predicates.

Performance optimizations.

src/uxbox/main/geom/matrix.cljs

@@ -44,7 +44,7 @@
     (let [[a b c d tx ty] v]
       (Matrix. a b c d tx ty))))
 
-(defn matrix?
+(defn ^boolean matrix?
   "Return true if `v` is Matrix instance."
   [v]
   (instance? Matrix v))

src/uxbox/main/geom/point.cljs

@@ -35,7 +35,7 @@
   (-point [v]
     (Point. (first v) (second v))))
 
-(defn point?
+(defn ^boolean point?
   "Return true if `v` is Point instance."
   [v]
   (instance? Point v))