Minor improvements and version bumps

repositories/build.gradle

@@ -10,14 +10,12 @@ uploadArchives {
     }
 }
 
-sourceCompatibility = 1.8
-
 dependencies {
     compile project(':core')
-    compile 'org.flywaydb:flyway-core:4.1.2'
+    compile 'org.flywaydb:flyway-core:4.2.0'
     testCompile 'junit:junit:4.12'
-    testCompile 'com.h2database:h2:1.4.194'
-    testCompile 'com.nhaarman:mockito-kotlin:1.4.0'
+    testCompile 'com.h2database:h2:1.4.196'
+    testCompile 'com.nhaarman:mockito-kotlin:1.5.0'
     testCompile project(path: ':core', configuration: 'testArtifacts')
     testCompile project(':cryptography-bc')
 }

repositories/src/main/kotlin/ch/dissem/bitmessage/repository/JdbcInventory.kt

@@ -156,7 +156,7 @@ class JdbcInventory(config: JdbcConfig) : JdbcHelper(config), Inventory {
         }
 
         for (c in cache.values) {
-            c.entries.removeIf { e -> e.value < now - 5 * MINUTE }
+            c.entries.removeAll { e -> e.value < now - 5 * MINUTE }
         }
     }
 

repositories/src/main/kotlin/ch/dissem/bitmessage/repository/JdbcMessageRepository.kt

@@ -235,7 +235,6 @@ class JdbcMessageRepository(private val config: JdbcConfig) : AbstractMessageRep
         }
     }
 
-    @Throws(SQLException::class, IOException::class)
     private fun update(connection: Connection, message: Plaintext) {
         connection.prepareStatement(
             "UPDATE Message SET iv=?, type=?, sender=?, recipient=?, data=?, ack_data=?, sent=?, received=?, " +