add json

src/meson.build

@@ -10,6 +10,8 @@ headers = [
   'hack/containers/utils.hpp',
   'hack/containers/vector.hpp',
 
+  'hack/exception/exception.hpp',
+
   'hack/iterators/associative_ostream_iterator.hpp',
   'hack/iterators/sequence_ostream_iterator.hpp',
 
@@ -37,8 +39,6 @@ headers = [
   'hack/utils/utils.hpp',
 
   'hack/view/color.hpp',
-
-  'hack/exception/exception.hpp'
 ]
 
 sources = []