1.2.1 * Update Italian translations * Update Japanese translations * Update markdown-pdf * Add support for unix sockets * Update "follow us" information to Community channel and translation * Add Cloudron installation method * Add guide for Mattermost authentication * Update various packages * Add Indonesian language as new translation * Fix content types in status router * Fix some modal colors in night mode * Fix CSP to allow usage of speaker notes * Fix some wrong title attributes in the editor toolbar * Fix some confusion about the default location of images. It's always the local filesystem now * Fix object handling in avatar generation code * Finally fix error handling of LZ-String by using self-maintained version * Fix migration handling * Fix gitlab API version * Fix some server crashes caused by PDF creation * Fix document length limit on post to `/new` * Fix broken youtube embedding on `/features` page * Refactor generation of table of contents * Refactor "copyright"-section to be a "Powered by" * Remove unneeded inline styling * NodeJS version 6 * Mattermost login integration (is replaced by [generic oAuth2 module](https://github.com/hackmdio/codimd/blob/6ce7b20a7f92ccff2f7f870ff5d116d685310cfd/docs/guides/auth/mattermost-self-hosted.md)) * [Alex Hesse (Pingu501)](https://github.com/Pingu501) * [Alexander Wellbrock (w4tsn)](https://github.com/w4tsn) * [Cédric Couralet (micedre)](https://github.com/micedre) * [Girish Ramakrishnan (gramakri)](https://github.com/gramakri) * [maahl](https://github.com/maahl) * [Max Wu (jackycute)](https://github.com/jackycute) * [Miranda (ahihi)](https://github.com/ahihi) * [Ondřej Slabý (maxer456)](https://github.com/maxer456)