1.65: Added legal gdpr/dsgvo info
1.63: Restrict sql index key length for utf8mb4 migration
1.62: Iconfont a11y fix (yellowled)

1.61:

    * some css fixes for prev S9y versions
    * fix admin link

1.60:

    * 2.0 markup ready (YL)
    * fix spectrum image height with 2.0
    * slightly reworked last visitors
    * fix for S9y version < 2.0 upgraders
    * fix a permission issue

1.53: fixed db table vistors, ip column to IPv6 length

1.52: fixed some missing ending strong tags * in 2.0 other markup changes

1.51: bumb event version for serendipity_plugin_statistics sync update to 1.5
      plugin 1.5 now fixes weekly stats and visitors online query with
      PostgreSQL

1.50, 1.49: Made commentor URLs add http:// if missing

1.48: (kalkin)

    * rewrote the botfilter. Now it's smarter.
    * the graphs can be maximal 200px large
    * the bar colors are now relative.

1.47: (kalkin)

    * added lots of bots
    * now the plugin just count each ip as an visitor at this day, not every
      refresh

1.40: (Shrikee/Arnan)

    * added a database table which holds daily stats.
    * 2 graphs which use the data in the above table
    * rewrote the bots filter
    * added a config option to show only visitor stats or show everything (post
      counts and such)
    * option to enable or disable the bot filter
    * fixed the referer register. They werent added in the database, now they
      are
    * if either $useragent, $referer or $remote_addr is empty or unknown, it's
      set to unknown.