WooCommerce Measurement Price Calculator 3.23.7

* Fix - Remove potential PHP errors by gracefully bailing out on edge cases where product measurement values are null
* Fix - When ordering again a product, make sure cart price determined from measurements is correct if the originally ordered item is a product variation
* Fix - Address a JavaScript browser compatibility issue with Microsoft Explorer
* Dev - Introduce a filter hook to modify the final calculated price for an item with measurements
* Misc - Drop support for PHP version 5.2: PHP 5.3 becomes the minimum supported version
* Misc - Update the SkyVerge Plugin Framework to version 5.3

* Fix - Fix incorrect price display on the product page for certain measurement values
* Fix - Don't change the entered measurement needed to the actual amount in quantity mode
* Fix - Ensure weight attributes are displayed as per-unit after variations are chosen on the product page
* Fix - Don't replace the amount needed input value with the actual calculated amount when clicking away from the input

* Tweak - Improve product front end input validation and add some inline guidance to help customers entering a required measurement value in the expected format
* Fix - When entering area or volume amounts in the product shipping data, add input field validation to make sure the values entered are in the expected format
* Fix - In user-defined mode, ensure no console errors are thrown in front end when "Accept a limited set of customer inputs" is selected and with decimals or fractions in the product configuration
* Fix - In user-defined mode, when "Accept free-form customer input" is selected and a minimum and a maximum values are set, make sure that in front end customers can enter the expected measurement values without an error being thrown upon adding to cart
* Fix - In quantity-based mode, ensure that the calculated measurement reflects the decimal separator in use
* Fix - When entering fractions in "Accept a limited set of customer inputs", but the store uses comma as decimal separator, make sure there are no miscalculations in front end when converting those fraction values into floats
* Dev - Introduce a filter to allow the calculator script to be enqueued when using a product shortcode