Advanced Custom Fields Pro 6.4.0.1

* Google Map field: Fixed bug causing invalid url to JavaScript library
* WYSIWYG field: Fixed minor z-index and drag/drop bugs
* Group field: Fixed bug causing incorrect export settings
* Core: Fixed bug in 'Post Taxonomy' location rule ignoring selected terms during AJAX callback
* Core: Fixed bug preventing a draft to validate with required fields
* Language: Updated Italian translation - thanks to Davide Pantè
* Language: Update Turkish translation - thanks to Emre Erkan
* Language: Updated Chinese translation - thanks to Wang Hao
* Language: Update Hebrew translation - thanks to Itamar Megged

• Button Group field: Added new field type
• Range field: Added missing 'step' attribute to number input
• Range field: Added width to number input based on max setting
• Basic fields: Added missing 'required' attribute to inputs
• Basic fields: Removed empty attributes from inputs
• API: Fixed `get_fields()` bug ignoring fields starting with an underscore
• Core: Minor fixes and improvements
• Language: Updated Portuguese translation - thanks to Pedro Mendonça
• Language: Updated French translation - thanks to Maxime Bernard-Jacquet
• Language: Updated Finnish translation - thanks to Sauli Rajala
• Language: Updated German translation - thanks to Ralf Koller

• Range field: Added new field type
• Clone field: Fixed bug causing value update issues for ‘seamless’ + widgets / nave menu items
• Location: Added parent theme’s post templates to ‘post template’ location rule
• Location: Fixed bug causing ‘nav menu’ location rule to fail during AJAX (add new item)
• Core: Fixed PHP errors in customizer when editing non ACF panels
• Core: Fixed bug casing backslash character to break fields / field groups
• Core: Many minor bug fixes
• Language: Updated Romanian translation – thanks to Ionut Staicu
• Language: Updated Italian translation – thanks to Davide Pantè
• Language: Update Turkish translation – thanks to Emre Erkan
• Language: Updated Russian translation – Thanks to Алекс Яровиков
• Language: Updated French translation – Thanks to Julie Arrigoni