1.3.0

What's Changed

• Add template part manager by @g-elwell in #134
• Refactor REST API by @g-elwell in #135
• Preview block theme templates by @g-elwell in #121
• Add file check data by @g-elwell in #136
• [112] - Stop spacing from being cleared by @jordanharris-6 in #119

Full Changelog: 1.2.2...1.3.0