RC.1 Version of DJ-Catalog2 Version 3.5.4

DJ-Catalog2 version 3.5.4 Release Candidate 1 was just released.

IMPORTANT: This is not a stable version for production sites! You can use it for tests only.
You'll find better PHP7 compatibility, improvements, fixes, and new features in this RC. Check the changelog:

1. (+) There is a new attribute (Page Heading) and the setting (Page heading override) - within categories and products - which both allow better control overheading on product and category pages.
2. (+) We added the "Show on Google Maps link" to the map markers.
3. (+) The Filters Module (mod_djc2filters) has a new version. It introduces a new type of filter (Checkbox OR) that applies to checkbox fields and becomes an alternative to the already existing Checkbox filter.
4. (!) In some cases, the values of old attributes were not deleted upon saving a product and changing its group of extra fields. It has been fixed now.
5. (!) New version of Producers Module (mod_djc2producers). It fixes the conflicts between two module instances on the same page.
6. (!) New version of Finder plugin (plg_finder_djcatalog2). It fixes the problem with indexing child products.
7. (!) Problems with contact and product submission forms ("0-Invalid address bug") have been fixed. (Joomla 3.5+).
8. (!) Problems with invalid database COLLATION when using alphabetical filters (A-Z) have been fixed (Joomla 3.5+).
9. (!) PHP 7 compatibility. In some specific cases, the list of extra field values was not included in the product form. This has been fixed.