Textile heading h-align mark support

Textile heading h-align mark support

https://github.com/redmine/redmine/blob/e575b7a6fcbffd5e48475b735cfc948ed3cc0d0e/lib/redmine/wiki_formatting/textile/formatter.rb#L60
https://github.com/redmine/redmine/blob/e575b7a6fcbffd5e48475b735cfc948ed3cc0d0e/lib/redmine/wiki_formatting/textile/redcloth3.rb#L340

• #4 Sections with ident mark

Add include_by_table_transpose macro

Update init.rb

Update version

Add include_by_table macro

Update init.rb

Update version

Support Redmine 5.0 and Common Mark

Merge pull request #3 from taikii/redmine5.0

Support Redmine 5.0 and common_mark

New options

• New feature: 2 new options. (noheading, nosubsection)
• Fix to make error if section can not be found.
• Bugfix: Index shifts when content is empty.

0.0.2

Support markdown

0.0.1

1st commit.