Prepare for 3.1.0 release

Author: istreeter

CHANGELOG

@@ -1,4 +1,9 @@
-Version 3.3.0 (2023-05-30)
+Version 3.1.0 (2023-06-09)
+--------------------------
+Not Found results should be cached for as long as the TTL (#248)
+Http4s client should implement a retry policy (#246)
+
+Version 3.0.0 (2023-05-30)
 --------------------------
 Embedded and in-memory lookups should be common across http modules (#244)
 Take superseding schema into account during validation (#231)

README.md

@@ -11,12 +11,12 @@ Iglu Scala Client is used extensively in **[Snowplow][snowplow-repo]** to valida
 
 ## Installation
 
-The latest version of Iglu Scala Client is 3.0.0, which works with Scala 2.12, 2.13, and 3.
+The latest version of Iglu Scala Client is 3.1.0, which works with Scala 2.12, 2.13, and 3.
 
 If you're using SBT, add the following lines to your build file:
 
 ```scala
-val igluClient = "com.snowplowanalytics" %% "iglu-scala-client" % "3.0.0"
+val igluClient = "com.snowplowanalytics" %% "iglu-scala-client" % "3.1.0"
 ```
 
 ## API