Readme mentions settings for Markdown and ReST, but we can apply them
automatically for the current filetype. If a user is editing a no
filetype scratch buffer, they'll still need to configure these options
themselves. But this provides better defaults when editing a buffer of
these filetypes.
Adds get_buffer_or_global_option that could be used for any other
buffer-local (filetype-specific) options.
* Refactored complete code to be more modular.
* Fixed long standing unicode alignment issue #8.
* Testing individual components ensuring better test coverage.
