1.20 update

Adds an optional feature which displays the contents of a bookshelf when left-clicked. Sneaking must be used to destroy the bookshelf when enabled.
Updates depreciated sign code.
Bumps the API version to 1.20
Builds against 1.20

src/main/resources/config.yml

@@ -30,4 +30,6 @@ Options:
   # Whether to display "COPY" or "COPY_OF_COPY" instead of "ORIGINAL" when a book is copied. This also uses the 
   #  vanilla behavior where a copy of a copy cannot be copied further.
   Change_Generation_On_Copy: false
-  
+  # Whether to enable hitting a chiseled bookshelf to see the shelf's contents. Sneaking is required to destroy a
+  # bookshelf if this is enabled.
+  Enable_Book_Peeking: false

src/main/resources/plugin.yml

@@ -1,7 +1,7 @@
 name: BooksWithoutBorders
 version: '${project.version}'
 main: net.knarcraft.bookswithoutborders.BooksWithoutBorders
-api-version: 1.18
+api-version: 1.20
 prefix: Books Without Borders
 authors: [ EpicKnarvik97, AkiraAkiba ]
 description: A continuation of the original Books Without Borders
@@ -131,6 +131,7 @@ permissions:
       bookswithoutborders.save: true
       bookswithoutborders.load: true
       bookswithoutborders.delete: true
+      bookswithoutborders.peekbookshelf: true
   bookswithoutborders.alterbooks:
     description: Allows player to change books' data such as lore/title/author/generation/formatting and unsigning books
     children:
@@ -190,4 +191,6 @@ permissions:
   bookswithoutborders.reload:
     description: Allows player to reload this plugin
   bookswithoutborders.setgeneration:
-    description: Allows player to change the generation of a book (Original, Copy, Copy of Copy)
+    description: Allows player to change the generation of a book (Original, Copy, Copy of Copy)
+  bookswithoutborders.peekbookshelf:
+    description: Allows player to left-click a bookshelf to see the contents of the shelf