1.9.0

Main Features:

Now supports 1.18
/nbt export <give|get|cmdblock>, which allows you copy a command or get a command block to receive the item you're currently holding
The expand button in the editor now opens the value of the current path when no key is selected, allowing you to access the entire root tag at once if the path is empty
There is a new text format, which is used in all the text related commands (refer to /get help textformat). This can be disabled in the config, which switches to the old JSON system
/itemfactory name <name>, which names the item you're holding (and supports the text format)
/itemfactory unstackable, which gives a random UUID to the item you're holding
Shortcut commands, which can be enabled in the config (/nbt config). This allows you to, for example, run /lore instead of /itemfactory lore

Small Features:

The config menu now uses the standard menu format (the same format the attributes and enchantment editor uses)
The config menu has more descriptive tooltips
The "Key Fix" config option has been renamed to "Mac Border Patch," and is now colored red on Mac computers
New Mac users have the Mac Border Patch enabled by default
There is now a config option to disable checking for updates
/signature is now an itemfactory (use /itemfactory signature to access it)

Bug Fixes:

The Mac Border Patch config option is now checked in the expand button's menu, fixing rendering
The rename item feature inside the NBT editor now supports navigating with arrow keys
/itemfactory lore's command suggestions now start with /itemfactory lore instead of /lore
When opening strings in the NBT editor, true and false is now converted to "true" and "false," rather than 1b and 0b, which caused issues with text

Technical & major code changes:

NBT Editor