Update changelog, preparing for v0.3 release
[#1] and [#33] typo fix
Set guile as the default scheme implementation for geiser.

Otherwise, org-babel will always prompt for "Scheme implementation" when
you use org-mode with org-babel scheme support.
Upgrade builtin org-mode to 8.x git branch.
Add shell-escape cli option support for auctex LaTeX backend.

Or we can provide a general way to support command line options for
auctex backend. For now, this is enough for me.
[#1] type fix and todo list cleanup
Enable code syntax highlighting when export org to latex files.
Fix makefile bug for html doc target.

There's no htmlize code syntax highlighting support since we use Emacs
in batch mode. I've tried but failed to make htmlize work with org-mode
when use Emacs in batch mode.
[#1] typo and minor fix
Fix [#28], a workaround for undo-tree master bug.

This is just a workaround. I've sent a email to the author of undo-tree,
however, there's no response yet.
Fix a org-mode 8.x first time boot up error.
Install org-mode 8.0 as the first el-get package.
Update ome package list
Add tarball target in Makefile for release handy.