v2.0.3

846ead2 Merge pull request #1924 from @gohai, fixes #1992 - Add serial to iframe allow list
a948256 Merge pull request #1886 from @peilingjiang-DEV, Add Simplified Chinese translation
e197984 Merge pull request #1902 from @catarak, fixes #1887, fixes #1890 - Fix bug in which content of different files becomes linked
13d6799 Merge pull request #1696 from @JD-RD, fixes #1666 - Add French Canadian translation
5d76e0b Merge pull request #1903 from @catarak, fixes #1885 - improve GLSL Syntax Highlighting