some cleanup of headers

src/lib/include/paradiso/bitmap.hpp

@@ -1,13 +1,33 @@
+/*
+ * Copyright 2023 Hartmut Seichter
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
 #ifndef PARADISO_BITMAP_HPP
 #define PARADISO_BITMAP_HPP
 
-#include "geometry.hpp"
-#include "globals.hpp"
-#include "rgba.hpp"
+#include <paradiso/globals.hpp>
+#include <paradiso/geometry.hpp>
+#include <paradiso/rgba.hpp>
+
 
-#include <type_traits>
-#include <vector>
-#include <cassert>
 
 namespace paradiso {
 struct Bitmap final {