Add more repo documentation

POTENTIAL_FEATURES.md

@@ -32,3 +32,14 @@ implement. Further it might be better to keep non-`add-ed` commands more
 clearly separate. If you want to use this feature please provide an example
 implementation and settle in for some discussion, so the feature is implemented
 in a clean way that fits your use-case.
+
+# More variant commands:
+There are loads of potential variations on existing commands. I (sidju) have
+decided to be restrictive on what I add initially, so that any further built-in
+commands can be decided upon through discussion with users later.
+
+Though some variants were added and have implementations ready in the codebase
+none of them are enabled, as they were found to not be that useful. Any further
+commands will need to be significant distincts (not just prepend to an index
+instead of appending, but using start of selection instead of end of selection
+is sufficiently distinct if relevant).

README.md

@@ -58,3 +58,7 @@ There are two main contributions welcomed as of now.
 2. Checking off ToDo:s. Look into the [TODOS.md](TODOS.md) file, pick a task to
    do and go wild. You can add a PR to prevent others from working on the same
    task (mark it as WIP until relevant to review).
+3. Create issues for undocumented or unexpected behaviour.
+4. Request support for your use-cases. Create a feature request issue for what
+   you need. (Look into [POTENTIAL_FEATURES.md](POTENTIAL_FEATURES.md) to see if
+   a similar feature is prepared and if so note it in the feature request.)

RELEASE_NOTES.md

@@ -3,8 +3,11 @@ Nearing a stable release now, so some less clean features are remade in this
 release to be easier to maintain in a stable manner forward.
 
 - New command documentation.
+- Update the README.md and add more in-repo documentation.
 - Add proper macro support under ':', with support for arguments and tests to
-  verify its behaviour.
+  verify its behaviour. This also changed the macro methods on `Ed` struct.
+- Make '!' forbid selection, instead require using '|' for filtering text
+  through a shell command.
 - Cut down on less meaningful variant commands to make it easier to add more
   diverse features without breaking the command language in the future.
   - 'J' has been removed, as it is functionally equivalent or inferior to
@@ -17,6 +20,11 @@ release to be easier to maintain in a stable manner forward.
     you might as well just give that index - 1 to prepend.
 - Started testing with insight into undo history, so undo snapshot creation is
   now testable and verified.
+- Made some exported structs impossible to create aside from constructors, to
+  enable maintaining compability by just keeping the same constructors as the
+  member variables change.
+- Limit nesting depth when running commands than run commands. (Mainly to
+  prevent macros from doing infinite recursion.)
 
 # 0.10.0
 - Add a first sketch of undo/redo. Feedback on behaviour is requested in the