Tiny fix of usage
Add encoding option to convert utf8 version of PukiWiki
Support converting `th` cell starting with '~'

Note that '~' is placed after formatting codes like `LEFT`.
Add --use-heading option

This is useful when using useheading option.
See: https://www.dokuwiki.org/config:useheading
Convert MenuBar to sidebar
Merge pull request #1 from orangain/set-of-new-features

Set of new features