0.4.6

- [X] Prepare Backlog
- [X] Fix - CLOSE https://github.com/org-trello/org-trello/issues/172
- [X] Fix - prelude does some monkey-patching on json-encode-hash-table which is used by org-trello - reimplement this function
- [X] CI is broken again - fix
- [X] Update version
- [X] Update release notes

Thanks @dtebbs