* changed the license from GPLv3 to BSD
* improving the documentation
* changes:
* **important**: the replacement pattern for values within the template changed from __%*<FIELD_NAME>*%__ to __\[\[:*<FIELD_NAME>*:\]\]__
* topics are stored as list in the index file
* the filenames in the index now include the extension
* the **state** attribute was removed from the index file
* replaced option **--have-php-index** by the option **--topic-format *<FORMAT>*** which directly defines how each of a blog entries topics shall be rendered when embedding it into the template
* removed options **--default-author *<NAME>***, **--default-copyright-date *<DATE>***, **--default-state *<STATE>*** and introduced replacements with defaults instead
* new
* the indentation level of the index file can now be set using the option **--index-indent *<INT>***
* you may use a different format for the date in your entries than the ISO-format by defining it using **--date-format *<DATE_FORMAT>***
* added the possibility to skip document parts using the begin/end tags __\[\[:?*<FIELD_NAME>*:\]\]__ and __\[\[:*<FIELD_NAME>*?:\]\]__ if __*<FIELD_NAME>*__ is not set