version v4.1.0 (Nov 29, 2019)

* give the user the chance to download the album, either with or without its subalbums; download can include everything, or images only, or videos only
* added 3-9 pinch by shortcut
* generation of composite images has been disabled, because it mixed protected and unprotected images
* many bug fixes

* simplify and fix menu behaviour
* fixed image zoom
* zoom now has now limit

wrong version number

* scanner now reports unrecognized file with their mime types
* when an album has many (according to the corresponding new options) media/positions, they are saved to a separate json file
  * new option: `max_media_in_json_file`
  * new option: `max_media_from_positions_in_json_file`
* `python3` is now used in scanner
* `python3-magic` is used to detect file types
* albums and media can be protected with passwords: protected content isn't exposed in the album tree or the cache
  * new option: `passwords_file`: a file which is read when the options file is read, it defines the passwords and their respective identifiers
  * new option: `passwords_marker`: the name of the files to put in the albums tree in order to specify the passwords for albums and files
    * directory and file names can be matched case sensitive/insentitive, whole name/part of it
  * new option: `passwords_subdir`: the cache subdir where the passwords files are written
  * new shortcut `u` to unveil protected content
  * new option `protected_directories_prefix`: the prefix for the protected json files directories
* new right menu entry: runs an authentication dialog to unveil the protected content; a padlock left to the right menu is shown too
* when showing a map album, `esc` takes back to the map and the popup
* right menu: bug fixes and better ordering of the options
* right menu: new entry that permits to unveil protected content
* right menu is now of accordion type in order to be always visible on mobile screens

working with bug fix for media with dots in name

* media shown in map popup are now albums, and can be sorted like regular albums
* new shortcuts for changing sort of albums (`[` - `]`) and media (`{` - `}`), in a rotative way: name -> name reverse -> date reverse - date
* more javascript messages for potentially slow loading

* fixed bug with spurious text seen on mobile when loading
* fixed map size on both pc and mobile (with css _modal_)
* fixed bug with lazy load not working in bottom thumbnails
* new option 'copy_exif_into_reductions' (defaults to _false_) in order to permit copying all the exif metadata (and particularly the copyright info) to every reductions/thumbnails
* new shortcut _<_/_>_ for rotating among browsing modes: folders -> by date -> by gps -> by map -> by search
* json files size has been slightly reduced removing unnecessary properties or property parts
* permit scrolling bottom thumbnails with mouse wheel

* images collected by map clicks can now be shown as an album and browsed

* the popup is now positioned in an average point among all the points that contribute their photos to the popup
* bug fixes
* lazy loader changed to jquery.lazy: it permits defining post-load actions