feat: add cmasher colormaps (#75)

* feat: add cmasher colormaps

* sort record files

LICENSE/LICENSE_CMASHER

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2019-2021, Ellert van der Velden
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
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+  this list of conditions and the following disclaimer in the documentation
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+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
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+
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src/cmap/_catalog.py

@@ -238,9 +238,17 @@ def __init__(
         # _rev_aliases maps fully qualified names to a list of aliases
         self._rev_aliases: dict[str, list[str]] = {}
 
-        for name, data in _build_catalog(
-            sorted(data_root.rglob(record_pattern))
-        ).items():
+        # sort record files.  Put matplotlib-related names first so that un-namespaced
+        # names resolve to the matplotlib colormaps by default.
+        MPL_PRIORTY_NAMESPACES = ("matplotlib", "bids", "matlab", "gnuplot")
+
+        def _sorter(x: Path) -> tuple[int, Path]:
+            if any(s in str(x) for s in MPL_PRIORTY_NAMESPACES):
+                return (0, x)
+            return (1, x)
+
+        record_files = sorted(data_root.rglob(record_pattern), key=_sorter)
+        for name, data in _build_catalog(record_files).items():
             normed_name = self._norm_name(name)
             self._original_names[name] = normed_name
             self._data[normed_name] = data