Add migration notes to changelog

Also clean up some other formatting for consistency

CHANGELOG.md

@@ -22,6 +22,11 @@ ambiguous situations.
 
 ## Unreleased
 
+If your config file doesn't do weird things with transforms, it should continue
+to work. If your `-re->` arrows behave weirdly, try replacing them with
+`-exact-re->` arrows. If you're on Windows, you might need to switch from `\`
+path separators to `/` in your regex rules.
+
 ### Added
 - `skip` option for crawlers
 - Rules with `>>` instead of `>` as arrow head

CONFIG.md

@@ -342,7 +342,8 @@ Example: `\..+ -name-re-> !`
 
 ### The `-exact-re->` arrow
 
-The `-exact-re>` arrow is like a combination of the `-exact->` and `-re->` arrows.
+The `-exact-re>` arrow is like a combination of the `-exact->` and `-re->`
+arrows.
 
 Example: `f(oo+)/be?ar -exactre-> B{g1.upper()}H/fear`
 - Doesn't match `a/foo/bar`, `foo/abc/bar`, `afoo/bar` or `foo/bars`
@@ -375,8 +376,7 @@ tutorials --> !
 The second rule is required for many crawlers since they use the rules to decide
 which directories to crawl. If it was missing when the crawler looks at
 `tutorials/`, the third rule would match. This means the crawler would not crawl
-the `tutorials/` directory and thus not discover that `tutorials/tut02/`
-exists.
+the `tutorials/` directory and thus not discover that `tutorials/tut02/` exists.
 
 Since the second rule is only relevant for crawling, the `TARGET` is left out.
 

README.md

@@ -28,9 +28,9 @@ The use of [venv](https://docs.python.org/3/library/venv.html) is recommended.
 
 ## Basic usage
 
-PFERD can be run directly from the command line with no config file.
-Run `pferd -h` to get an overview of available commands and options.
-Run `pferd <command> -h` to see which options a command has.
+PFERD can be run directly from the command line with no config file. Run `pferd
+-h` to get an overview of available commands and options. Run `pferd <command>
+-h` to see which options a command has.
 
 For example, you can download your personal desktop from the KIT ILIAS like
 this: