Replace compatibility with new matrix

CONTRIBUTING.md

@@ -95,24 +95,18 @@ JEKYLL_ENV=local make build  # Do a clean build of the site to the _site directo
 diff -ruN _site _site.bak  # Compare the generated sites (-r for recursive, -u for unified, -N for new file)
 ```
 
-## Compatibility Matrix Data
+## Bitcoin Feature Matrix Data
 
-The compatibility matrix section of the website is built from
-[YAML](https://yaml.org/) files located in [_compat/en](_compat/en).
-The compatibility images (usability
-screenshots, logos) are located in [img/compatibility/](img/compatibility/) with
-sub-folders for each wallet or service. Make sure to optimize any png files using
-`optipng -o7 <filename>`. These files are free for anyone to repurpose/republish
-elsewhere.
+The Bitcoin Feature Matrix section of the website is built from
+[YAML](https://yaml.org/) files located in [_data/matrix/](_data/matrix/).
 
-We welcome pull requests to the compatibility matrix, including
-testing the latest versions of previously tested services/wallets, adding notable
-usability screenshots, or adding new service/wallet tests.
+We welcome pull requests to the Bitcoin Feature Matrix, including
+testing the latest versions of previously tested products/services, adding new products/services, or adding features to test.
 
-When contributing changes to the compatibility matrix data files, review and adhere to
+When contributing changes to the Bitcoin Feature Matrix data files, review and adhere to
 the YAML schema located in [_data/schemas/compatibility.yaml](_data/schemas/compatibility.yaml).
 
-If you believe any of the data in the compatibility matrix is incorrect, you
+If you believe any of the data in the Bitcoin Feature Matrix is incorrect, you
 can also [submit an issue](../../issues/) detailing what is wrong and how to correct it.
 
 If you want to request a new service or wallet be evaluated, or a new test that you