restructuring

src/container/root.zig

@@ -0,0 +1,16 @@
+pub const Point = @import("point.zig").Point;
+pub const Rect = @import("rect.zig").Rect;
+pub const Rowable = @import("rowable.zig").Rowable;
+pub const Matrix = @import("matrix.zig").Matrix;
+pub const SubMatrix = @import("sub_matrix.zig").SubMatrix;
+pub const RowIterator = @import("row_iterator.zig").RowIterator;
+
+// Error are all the errors that can exist for Container
+// types.
+pub const Error = error{
+    OutOfBounds,
+};
+
+test {
+    @import("std").testing.refAllDecls(@This());
+}