Use change-inner package.
Fix bug that nautilus fails to open dir contails space.
Org Chinese pdf export.
LaTex yasnippets.

From https://github.com/madsdk/yasnippets-latex.git
May use xelatex as default latex engin.
More latex snippets.

Mainly from https://github.com/Sleft/yasnippet-latex-mode.git