Added TODO list for unsupported problems.

README.md

@@ -194,6 +194,9 @@ yamlfixer currently (as of 0.6.4) can fix the following problems as reported by
 
 An always up-to-date list of fixers can be obtained with `yamlfixer --listfixers`.
 
+Please read our [TODO list](https://github.com/opt-nc/yamlfixer/blob/main/TODO.md)
+to see which problems are still unsupported but which we plan to support some day.
+
 **IMPORTANT : fixing syntax errors is done on a best effort basis and
 may work only partially or not at all for you. Use the -N|--nosyntax
 command line switch do prevent `yamlfixer` from trying to fix syntax

TODO.md

@@ -0,0 +1,19 @@
+# TODO
+
+Here's a list of problems reported by yamllint which are not currently
+supported by yamlfixer, but which might be supported in a future
+release :
+
+* too few spaces inside brackets
+* too few spaces inside empty brackets
+* too many spaces after question mark
+* missing document end "..."
+* found forbidden document end "..."
+* found forbidden document start "---"
+* wrong new line character: expected \\r\\n
+* wrong new line character: expected \\n
+* forbidden implicit octal value "%s"
+* forbidden explicit octal value "%s"
+* string value is not quoted with %s quotes
+* string value is not quoted
+* string value is redundantly quoted with %s quotes