0.3.6

- [X] Test multiple emacs version - https://github.com/org-trello/org-trello/issues/52
- [X] Add a logo to website - https://github.com/org-trello/org-trello/issues/129
- [X] Synchronize user comments - https://github.com/org-trello/org-trello/issues/86
- [X] Add a comment to a card - https://github.com/org-trello/org-trello/issues/132
- [X] Take control over the test file which is now too big (dispatch in 'namespace' test buffer)
- [X] Version
- [X] Release notes