Update gradle properties docs

mdg/gradleproperties.md

@@ -1,24 +1,34 @@
 # Gradle properties
-Mods.groovy gives you access to Gradle properties in your `mods.groovy` file with the `buildProperties['propertyName']` syntax.  
-This contains the properties from your gradle.properties file and any global ones, so you may want to blacklist them to
-avoid leaking private keys.
+Mods.groovy lets you expose project properties to your `mods.groovy` file, which can be accessed with the
+`buildProperties['propertyName']` syntax. This contains only properties you explicitly expose:
+```groovy
+modsDotGroovy.gather {
+    projectProperty 'propertyName'
+}
+```
 
-## Blacklisting
-By default, the Gradle plugin excludes properties whose name contains (case-insensitive):
-- pass
-- password
-- token
-- key
-- secret
+Note that `.gather` is shorthand for configuring the default generated gather tasks; a similar `.convert` shorthand exists
+for configuring the generated conversion tasks.
 
-You can change the blacklist with:
+## Version Catalogs
+Mods.groovy can capture version catalogs and exposes the values to the `mods.groovy` file; they are accessible through the
+`libs` property. By default, the `libs` version catalog is captured if it exists. To change which catalogs are captured,
+add to the `catalogs` property:
 ```groovy
 modsDotGroovy {
-    environmentBlacklist = ['private']
+    catalogs.add 'anotherVersionCatalog'
 }
 ```
+All captured version catalogs are merged and exposed in the same `libs` property.
 
-:::caution
-This overwrites the default blacklist, so you should copy over the words above if you want to add new entries
-rather than replace.
-:::
+## Environment Information
+The `environmentInfo` property exposes the raw information passed into the `mods.groovy` environment; in addition to the
+build property and version catalog information, a group and version (defaulting to the project group and version) are passed
+in as `environmentInfo.version` and `environmentInfo.group`. The group and version passed in can be configured on the
+conversion task:
+```groovy
+modsDotGroovy.convert {
+    projectVersion.set '1.0.0'
+    projectGroup.set 'org.example'
+}
+```

mdgexamples/build.gradle

@@ -1,3 +1,3 @@
 plugins {
-    id 'org.groovymc.modsdotgroovy' version '2.0.0-beta.10' apply false
+    id 'org.groovymc.modsdotgroovy' version '2.0.0-beta.21' apply false
 }

mdgexamples/neoforge/src/main/resources/mods.groovy

@@ -31,7 +31,7 @@ NeoForgeModsDotGroovy.make {
         // The version of the mod. You can hardcode this or use '${file.jarVersion}' to substitute it with the
         // Implementation-Version of the mod jar
         // Alternatively you can pull the version of your Gradle Project through the syntax specified below
-        version = buildProperties.version
+        version = environmentInfo.version
 
         // The authors of the mod
         authors = ['Myself', 'I']
@@ -53,7 +53,7 @@ NeoForgeModsDotGroovy.make {
             // Declare an optional JEI dependency
             mod('jei') {
                 // This dependency is against any version of JEI with the major component 17
-                versionRange = v('17.*')
+                versionRange = '17.*'
                 type = DependencyType.OPTIONAL
             }
         }