v1.6.0

• Support sale start and end dates
• Include tax on sale price as needed
• Fix visibility toggle on the product page
• No longer publish hidden products
• Use variable products' attribute name, instead of slug name
• Fix encoding issue in Variation names
• Resolve W3 validation error caused by pixel code
• Correctly sync variants where the attribute is not specified or set to 'any'.
• Save Changes button no longer disappears in other settings pages
• Fix a JS warning caused by ViewCategory events by switching to trackCustom
• Fix quoted strings having unneeded slashes in the FB Description
• Fix Unicode encoding in Category Names. Thanks @jancinert.