clear previously defined autocmds
projects can be indented
align syntax patterns and @done tags don't require a time
better folding support for syntax highlights
check only taskpaper buffers for caching plugin load
add ShowProject function to show single projects
toggle done projects as well and echomsg to stick
add toggle tag command :Tag and <Leader>tt mapping
update docs with contributions
code cleanup, toggle tag fix
temporary cursor position should be a script var
toggle done with/without (date) syntax
done tasks highlight should include the whole line
Improve tagging functionality.

* Add functions to add, delete, toggle and update tags easily.
* Add 'Archive Done' function that moves all @done items to Archive project.
Improve archiving behavior.

* Add g:task_paper_archive_project to specify the project for archiving.
* Fix some bugs.
Move child nodes together when archiving done items.
Use 'comments' to continue to write a task item.
Allow tagging for non-task items.
expandtab.
Fix a bug in archiving done.

Move all done items to Archive project.