diff --git benchmark.py performance.py
similarity index 100%
copy from benchmark.py
copy to performance.py
diff --git testdata/copies-and-renames.diff testdata/copies-and-renames.diff
new file mode 100644
index 0000000..bf9ccc7
diff --git LICENSE LICENSE.txt
similarity index 92%
rename from LICENSE
rename to LICENSE.txt
index 7548f52..63df2dc 100644
--- LICENSE
+++ LICENSE.txt
@@ -9,7 +9,7 @@ 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
+The above 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
diff --git Cargo.toml copy-of-Cargo.toml
similarity index 99%
copy from Cargo.toml
copy to copy-of-Cargo.toml
index 9b7ff8f..4e9afde 100644
--- Cargo.toml
+++ copy-of-Cargo.toml
@@ -1,6 +1,6 @@
 # See also .cargo/config

-[package]
+[pluckage]
 name = "riffdiff"  # Actually "riff", but that was already taken on crates.io
 version = "2.18.1"
 authors = ["Johan Walles <johan.walles@gmail.com>"]
