SnCrates v2.1.0

Changes

The editor tells you how to get out of a chat prompt. Every prompt now
sends the cancel word and the seconds left underneath it. One language key
(messages.editor.cancel-hint), so it covers every prompt including new ones.

Preview Layout is a click, not a chat prompt. It cycles the layouts listed
under the new editor.preview-layouts in config.yml, skipping any id that no
file in guis/ backs, so a crate can never end up pointing at a preview that
will not open.

Accepted Keys offers physical, virtual and both. PERMISSION is off the
button. It still parses out of a crate file and still opens crates - clicking
the button on such a crate restarts the cycle at physical.

A reward's win commands are listed on its icon, numbered, so you can see
which ones are there. A line is marked in red when it will not run as written:
it is empty, it uses a placeholder that does not exist (only {player},
{amount} and {crate} are filled in), or it uses a %papi% token on a server
with no PlaceholderAPI.

Fixed: opening a crate panel logged Invalid value in config.yml -> 'effects.complete-particle-count': received '40', using default '40' once per
render. Nothing was wrong with the value - the panel was reading a number as
text. It is read as a number now.

Tidier defaults. The five three-state controls no longer share two dyes
between them; each state of each control has its own item. Every "Back" is the
same door and the arrows are only ever page arrows. The menu and message text
says what to write - FLAME, BLOCK_CHEST_OPEN 1 1.2 - instead of naming
types like "a Bukkit particle" or "DateTimeFormatter syntax".

CHAIN was avoided on purpose: it is IRON_CHAIN on 1.21.9 and newer. Every
material shipped here resolves on 1.20.2, 1.21.1 and 1.21.11.

Installation

Download the JAR below and place in your plugins folder. Requires SnLib.jar.