readme/todo cleanup (#1322)

* remove outdated todo list

* clean up outdated info from README

readme.markdown

@@ -1,76 +1,30 @@
 # Nimble
 
-
-Nimble is the default *package manager* for the
-[Nim programming language](https://nim-lang.org).
-
-
-
+Nimble is the default *package manager* for the [Nim programming language](https://nim-lang.org).
 
 ## Documentation
 
-Interested in how to use Nimble? See the
-[Nimble Guide](https://nim-lang.github.io/nimble/index.html),
+Interested in how to use Nimble? See the [Nimble Guide](https://nim-lang.github.io/nimble/index.html),
 where you can learn:
 - [How to install existing packages](https://nim-lang.github.io/nimble/use-packages.html)
 - [How to create a Nimble package](https://nim-lang.github.io/nimble/create-packages.html)
 - [How to use `nimble develop` workflow](https://nim-lang.github.io/nimble/workflow.html)
 
-
 This documentation is for the latest commit of Nimble.
 Nim releases ship with a specific version of Nimble and may
 not contain all the features and fixes described here.
 `nimble -v` will display the version of Nimble in use.
 
-The Nimble changelog can be found
-[here](https://github.com/nim-lang/nimble/blob/master/changelog.markdown).
-
-
-
-
-
-## Repository information
-
-This repository has two main branches: `master` and `stable`.
-
-The `master` branch is...
-
-* default
-* bleeding edge
-* tested to compile with a pinned (close to HEAD) commit of Nim
-
-The `stable` branch is...
-
-* installed by `koch tools`/`koch nimble`
-* relatively stable
-* should compile with Nim HEAD as well as the latest Nim version
-
-Note: The travis build only tests whether Nimble works with the latest Nim
-version.
-
-A new Nim release (via `koch xz`) will always bundle the `stable` branch.
-
-
-
-
+The Nimble changelog can be found [here](https://github.com/nim-lang/nimble/blob/master/changelog.markdown).
 
 ## Contribution
 
-If you would like to help, feel free to fork and make any additions you see fit
-and then send a pull request.
-
-If you have any questions about the project, you can ask me directly on GitHub,
-ask on the Nim [forum](https://forum.nim-lang.org), or ask on Freenode in
-the #nim channel.
-
-
-
-
+If you would like to help, feel free to fork and make any additions you see fit and then send a pull request.
+If you have questions about the project, you can ask directly on GitHub or reach out to the [Nim community](https://github.com/nim-lang/Nim?tab=readme-ov-file#community).
 
 ## About
 
 Nimble has been written by [Dominik Picheta](https://picheta.me/) with help from
-a number of
-[contributors](https://github.com/nim-lang/nimble/graphs/contributors).
+a number of [contributors](https://github.com/nim-lang/nimble/graphs/contributors).
 It is licensed under the 3-clause BSD license, see [license.txt](license.txt)
 for more information.