Depend on css4j 3.7.1 or later to build.

Author: carlosame

README.md

@@ -69,8 +69,8 @@ and optional library packages are the following:
 ### Compile-time dependencies
 
 - The [css4j](https://github.com/css4j/css4j/releases) library (and its transitive
-  dependencies); version 3.6.1 or higher is recommended (compatibility with 4.0 or
-  higher is not guaranteed):
+  dependencies); version 3.7.1 or higher is recommended (compatibility with 4.0 or
+  higher is not guaranteed).
 
 - The [css4j-agent](https://github.com/css4j/css4j-agent/releases) library;
   version 3.6.0 or higher is recommended (compatibility with 4.0 or higher is

RELEASE_NOTES.md

@@ -1,13 +1,15 @@
 # css4j-dom4j version 3.7.0 Release Notes
 
-### ??? ??, 2022
+### February 15, 2022
 
 <br/>
 
 ## Release Highlights
 
-css4j-dom4j now requires css4j 3.7.0 or later to build, but can use previous 3.x
-versions at runtime.
+- `getSheet()` now returns null if the sheet's Content-Type is invalid.
+
+- css4j-dom4j now requires css4j 3.7.1 or later to build, but can use previous
+  3.x versions at runtime.
 
 
 ## Project Sites

build.gradle

@@ -25,7 +25,7 @@ java {
 dependencies {
 	api('io.sf.carte:css4j') {
 		version {
-			strictly '[3.7.0,)'
+			strictly '[3.7.1,)'
 			prefer '3.7.1'
 		}
 	}
@@ -49,7 +49,7 @@ dependencies {
 	xmlpullImplementation 'xpp3:xpp3_min:1.2.0'
 	testImplementation(group: 'io.sf.carte', name: 'css4j', classifier: 'tests') {
 		version {
-			strictly '[3.7.0,)'
+			strictly '[3.7.1,)'
 			prefer '3.7.1'
 		}
 	}