----------   Version 3.0   ----------
support for the new Global Site Tag and google's legacy codes
improved Facebook pixel
better AddToCart and AddToWishlist Facebook event coverage
save to a file feature redirects to the feed (instead of showing the file location)
option to include only selected categories in the feed
other improvements and bugfixes

----------   Version 3.1   ----------
image cache refresh can be disabled - hugely increases speed
added telephone number for Facebook advanced targeting
addtocart Facebook event button can be now set in the admin (only needed for some themes)
other improvements and bugfixes

----------   Version 3.2   ----------
new feed location - please update url if you use cron jobs
csv/xml feed file location changed to root oc1 & oc2
modified xml header for chrome web browser
improved image cache with a new option
improved database access in the feeds
new settings for 0 quantity and disabled products
removed meta description setting (meta description is used if available)
Google & Facebook conversion with/without shipping
Google & Facebook script values with/without taxes
Google scripts values (without currency info) now uses the default currency
fix for Facebook num_items on events
other improvements and bugfixes

----------   Version 3.2.1   ----------
added contents to the Facebook pixels
added an option to select description source
improved multi store feed support
multiple product types in the feed are now separated by comma
other improvements and bugfixes

----------   Version 3.2.2   ----------
added user_id parameter for google scripts
added "do not track" web browser setting support
added best checkout support
improved quickcheckout support
added support for additional images
improved special character support
improved option based price calculations
url parameter category_id changed to cat_id for better compatibility
other improvements and bugfixes

IMPORTANT UPDATE INFO v4.0.0
Please backup your old scripts and setup, because this version uses new settings and after the update the old setup will be gone.

----------   Version 4.0.0   ----------
reworked settings, scripts & feeds
added Custom Dynamic Scripts
added Facebook custom events with products
added Google Ecommerce
added Google Optimize
added Google IP anonymization
google script updated to the latest version
improved "do not track" web browser setting support
new feature to bypass server restrictions
added automatic option selection via product url
added product options to the Facebook feed
added support for pattern and material fields (Facebook & Merchant Center feed)
improved color and size options in the feeds
added currency and language as setting in the feeds
added include product url parameter
added exclude category url parameter
improved PHP 7.2 support
other improvements and bugfixes

----------   Version 4.0.1   ----------
fixes customizable script price calculation

----------   Version 4.0.2   ----------
changed all customizable script names to improve compatibility
added optional legacy google remarketing tags
added prices without discounts (customizable scripts)
added gender/age to the Facebook feed (apparel only)
added URL parameter to set the store
fix for multi-store feed
other improvements and bugfixes

----------   Version 4.0.3   ----------
fixes the special price of the add to cart event

----------   Version 4.0.4   ----------
added email, phone, first and last name to the customizable scripts
added delimiter to the customizable scripts
added Facebook currency settings
added inventory field to the Facebook feed
added &image_domain URL parameter
fixed merchant center feed settings save button (oc3)
other improvements and bugfixes

----------   Version 4.0.5   ----------
added URL parameter to filter products by manufacturers
added URL parameter to filter products by meta keywords
fixed the google taxonomy filter feature in the categories (oc1 & oc2)
other improvements and bugfixes

----------   Version 5.0.0   ----------
new custom feeds
improved datetime format
improved save to file feature
added Google currency and improved Facebook currency setting
added Customizable script settings for currencies & product options
added new Customizable script keywords
other improvements and bugfixes

----------   Version 5.0.1   ----------
added product range URL parameter
added use_age_group & use_gender URL parameter
added merchant center shipping calculations
performance improvements
other improvements and bugfixes

----------   Version 5.0.2   ----------
added GZIP compression
improved settings
added custom feed config file
added new custom feed URL parameters (html_entities_url, html_entities_text, remove_char)
improved option/attributes system in the custom feed
google analytics improvements
google ecommerce improvements
other improvements and bugfixes

----------   Version 5.0.2.1   ----------
fix for possible missing ending tags in the custom feed

----------   Version 5.1.0   ----------
added script template file support
added "add to cart" event to custom scripts
added "add to wishlist" event to Analytics Ecommerce
added "shipping" and "event_label" to Analytics Ecommerce
added new custom script keywords (user_language_locale, user_language_name, user_language_iso, total_quantity, calculate, round/precision, if/is_set/else, product_category_list)
added new custom feed keywords (calculate, round/precision, additional_image_index, custom_category_name, custom_category_id)
added feed custom category (custom feed re-install required)
simplified custom script lists
added template download buttons
#category# changed to #category_name# in custom scripts
#category_list# changed to #category_breadcrumb# in custom scripts
other improvements and bugfixes

----------   Version 5.1.1   ----------
added customer_group url parameter
added api call support to custom templates (php curl required)
scripts can be executed after the page finished loading (via ajax)
improved script templates
other improvements and bugfixes(shipping_price = 0 fix)

----------   Version 5.1.2   ----------
added cache control header
google optimize anti flicker can be disabled
fixed ajax calls on the account page
added multi language/currency support in a single feed (custom feeds)
added new replace keywords (custom feeds)
other improvements and bugfixes(script merged)

----------   Version 5.1.3   ----------
added &include_free URL parameter to enable/disable products with 0 price
improved custom click compatibility (custom scripts)
fixed api execution on the purchase/thank you page (custom scripts)
other improvements and bugfixes (custom script separated by tags)

----------   Version 5.1.4   ----------
added custom API consents
added price range URL parameter
added rating/reviews to custom feeds
improved category names in scripts
added support for option images modules
improved support for external modules
other minor improvements and bugfixes

----------   Version 5.2.0   ----------
added Facebook Conversions API
added google customer reviews
added gtin source setting
added new custom script keywords
improved themes compatibility
improved language support
other improvements and bugfixes

----------   Version 5.2.1   ----------
added same site cookie flag to google tags
added product filters to custom feeds
added related products to custom feeds
added api server debugging
improved language support
other improvements and bugfixes

----------   Version 5.3.0   ----------
added Google Measurement Protocol API
added Cross-domain Analytics measurement
improved settings
added availability date to Merchant Center & Custom feeds
fixed filters in the Custom feed
fixed related product urls in the Custom feed
removed gzip compression from Adwords feed

----------   Version 5.4.0   ----------
added cookie/tracking consent box
redesigned settings (oc 2.X & 3.X)
updated GA4 tags
improved conversion values
improved performance
improved IP address (Facebook API)
added fix for php 7.1 serialize precision setting
added enhanced google conversions (beta)
added unsupported variants (Merchant & Facebook Feeds)
added minimum quantity check (feeds)
added sell with checkout (Facebook feeds)
added "in stock" status setting (Merchant & Facebook feeds)
added option to not use GTIN (Facebook & Merchant feeds)
added option to not use variant IDs (Facebook & Google scripts)
added AddPaymentInfo and add_payment_info events (Facebook & Ecommerce)
added Facebook Conversions API version updater
added new user data for advanced matching (Facebook pixels)
added new custom scripts & feeds keywords

----------   Version 5.4.1   ----------
improved feed creation speed
improved speed of asynchronous processing
added new consent style
added stylesheet reset button
fixed the "Execute during page load" setting
fixed php 5.4 support
other improvements and bugfixes

----------   Version 5.4.2   ----------
improved extern extension support
fixed cart/checkout option prices
fixed missing shop description in some opencart versions (custom feeds)
changed product type sort order (merchant feed only)
fixed possible image php error
other improvements and bugfixes

----------   Version 5.4.3   ----------
fixed prices for bulk discounts and extensions
added granted consent event
added item condition (facebook & google feeds)
improved compatibility & asynchronous loading
added gtin values to custom scripts
other improvements and bugfixes
added custom feed parameter &fi

----------   Version 5.4.4   ----------
added product filters for size, color, pattern and material
added superquickcheckout support
added new custom feed/script keywords
added basic gtin validation
added adult only products (merchant feed)
added identifier_exists if brand, gtin and mpn is not set (merchant feed)
fixed unsupported product variants
other improvements and bugfixes

----------   Version 5.4.5   ----------
added Facebook API testing
added product SKU to feeds
improved external extension support
fixed Facebook content type
other improvements and bugfixes

----------   Version 5.4.6   ----------
improved external extension support
improved security
fixed Facebook unsupported currency
other improvements and bugfixes

!!!UPDATE INFO!!!
If you upgrade from an older version (5.X or older) to version 6.X some settings might get lost (due to the settings re-design), so please backup your settings first.

----------   Version 6.0.0   ----------
added opencart 4 support
complete settings re-design
attribute, filter options are no longer combined
improved save to file redirection
added product compare event
added remove from cart event (from oc 2.3.X)
improved add to cart event
improved custom scripts settings
improved custom feeds settings
other improvements and bugfixes

----------   Version 6.0.1   ----------
added energy efficiency class
improved merchant feed shipping
fixed php 8 compatibility
fixed installing (from oc 4.0.0.1)
fixed default settings (from oc 4.X)
improved google bounce rate/session length (non interaction)
fixed google currency settings
added currency/value to GA4
fixed cookie consent (from external link)
other improvements and bugfixes

----------   Version 6.0.2   ----------
added: custom labels (facebook & google feeds)
fixed: multistore settings saving
fixed: purchase event with custom checkout
other minor improvements and bugfixes

----------   Version 6.0.3   ----------
fixed: cookie causing page issues (used to track cart events in extension version 6)
fixed: cookie secure setting for stores without SSL
improved: google non interaction event
other minor improvements and bugfixes

----------   Version 6.1.0   ----------
added extension support (super quick checkout)
added PageView event to Facebook Conversions API
added GA4 view_cart event (replaces begin_checkout)
added GA4 search event (replaces view_search_results)
improved category names
improved theme compatibility (iwth soconfig)
fixed cache extension support
fixed and improved user data (lastname, empty, guest, country)
fixed product page with related products (opencart 4)
fixed header title on the product/category admin page (feeds)
fixed journal3 checkout
removed "Execute asynchronous" setting
other minor improvements and bugfixes

----------   Version 6.2.0   ----------

improved Facebook Conversion API (fbc creation, error logs, url referrer)
improved extern extension support (onepagecheckout superquickchekout)
improved shipping/payment event (extension support + bugfix)
improved compatibility (mysql)
added disabled_capabilities (facebook feed)
added unit_pricing_measure and unit_pricing_base_measure (merchant feed)
fixed tax setting (merchant feed)
fixed category (custom feed)
anonymized review author (custom feed)
other improvements and bugfixes

----------   Version 6.2.1   ----------
fixed & improved Google API (session_id, page_location, page_title)
fixed false warning in the extension settings
improved compatibility (feed)
improved external extension compatibility (seo, simplecheckout)
other improvements and bugfixes

----------   Version 6.2.2   ----------
improved feed performance
improved external extension compatibility (product_chained_option)
improved category sort order
added UTM url parameter: &utm=utm_source=google,utm_medium=cpc,utm_campaign=spring_sale
sp (shipping_price) url parameter renamed to scp
added purchase event on the checkout confirm button (optional)
improved user info for Enhanced conversions and Advanced matching
other improvements and bugfixes

----------   Version 7.0.0   ----------
added google consent v2
added new color/size options for custom feeds
added mpn source setting
added new Google Ads setting for unsupported countries
updated merchant center stock statuses
removed deprecated google analytics
removed deprecated google optimize
removed deprecated remarketing via analytics
fixed shipping tax
fixed weight (custom feed - removed unit)
changed google/facebook values (scripts)
improved external module compatibility (related options, quick_n_easy_checkout, xcheckout)
improved option sorting
improved total order calculations
added custom keywords #size#, #product_size_list#, #product_color_list# and #location#
added custom dynamic keywords #availability... and #value...
#variations# replaced by #variants#
#option_quantity# replaced by #variant_quantity#
other improvements and bugfixes

----------   Version 7.0.1   ----------
fixed missing consent box

----------   Version 7.1.0   ----------
added rich snippets
feed performance improvements
added default gender & age_group
added empty values for age_group, gender and taxonomy categories
settings design improvement
cookie delete list now uses * wildcard character
fixed missing consent box on some pages (opencart 3 only)
fixed image size setting missing cache options
fixed filter value (custom feeds)
fixed header scripts (custom only)
added empty sale price check in feeds
other improvements and bugfixes

----------   Version 7.1.1   ----------
added consent box style options (requires to restore the default consent stylesheet!)
added analytics/marketing tracking toggles
added consent box title
changed default consent grant/deny behavior
taxonomy category list tables replaced by files (feeds)
added keyword #sale_percentage# (custom feeds)
fixed new category saving
other improvements and bugfixes

----------   Version 7.1.2   ----------
improved consent box behavior
added default cookie toggle state setting
added required/technical cookies toggle
added show/hide consent toggles button
added additional hideable consent information
fixed business data feed
other improvements and bugfixes

----------   Version 7.1.3   ----------
added cookie expiration for rejected cookies