Bumping dependency versions

Author: littleclay

README.md

@@ -16,7 +16,7 @@ For instance, if you write a new class that overrides the `equals` method but fo
 <dependency>
     <groupId>com.redfin</groupId>
     <artifactId>contractual</artifactId>
-    <version>1.5.0<version>
+    <version>1.6.0<version>
     <scope>test</scope>
 </dependency>
 ```

pom.xml

@@ -8,7 +8,7 @@
 
     <groupId>com.redfin</groupId>
     <artifactId>contractual</artifactId>
-    <version>1.5.0</version>
+    <version>1.6.0</version>
     <modelVersion>4.0.0</modelVersion>
     <packaging>jar</packaging>
 
@@ -77,7 +77,7 @@
             <dependency>
                 <groupId>com.redfin</groupId>
                 <artifactId>insist</artifactId>
-                <version>2.2.0</version>
+                <version>3.0.1</version>
             </dependency>
             <dependency>
                 <groupId>org.junit.jupiter</groupId>