Update versions for 1.4.0

Author: SalusaSecondus

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 1.4.0 -- 2019-05-10
+
+### Minor Changes
+* Increased BouncyCastle dependency version to 1.61
+* Removed explicit use of BouncyCastle from all cryptography except for EC key generation and RSA encryption/decryption
+
+### Maintenance
+* Increased Mockito test dependency version to 2.23.4
+
 ## 1.3.6 -- 2018-12-10
 
 ### Patches

README.md

@@ -23,7 +23,7 @@ To use this SDK you must have:
   <dependency>
     <groupId>org.bouncycastle</groupId>
     <artifactId>bcprov-ext-jdk15on</artifactId>
-    <version>1.54</version>
+    <version>1.61</version>
   </dependency>
   ```
 
@@ -45,7 +45,7 @@ You can get the latest release from Maven:
 <dependency>
   <groupId>com.amazonaws</groupId>
   <artifactId>aws-encryption-sdk-java</artifactId>
-  <version>1.3.6</version>
+  <version>1.4.0</version>
 </dependency>
 ```
 

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>com.amazonaws</groupId>
     <artifactId>aws-encryption-sdk-java</artifactId>
-    <version>1.3.6</version>
+    <version>1.4.0</version>
     <packaging>jar</packaging>
 
     <name>aws-encryption-sdk-java</name>
@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.bouncycastle</groupId>
             <artifactId>bcprov-ext-jdk15on</artifactId>
-            <version>1.60</version>
+            <version>1.61</version>
         </dependency>
 
         <dependency>