Prepare release 1.3.0 (#28)

Author: marchof

README.md

@@ -23,7 +23,7 @@ The latest Three4J version can be obtained with the following Maven dependency:
 <dependency>
     <groupId>com.mountainminds</groupId>
     <artifactId>three4j</artifactId>
-    <version>1.2.0</version>
+    <version>1.3.0</version>
 </dependency>
 ```
 
@@ -84,7 +84,7 @@ PrivateKey myPrivateKey = KeyEncoder.decodePrivateKey(myPrivateKeyStr);
 ### Lookups
 
 Sending a Threema message requires you to know the eight character
-long Threema ID of the receiver. Users my choose to register their
+long Threema ID of the receiver. Users may choose to register their
 telephone number or email address with their account which can then
 be queried to lookup their Threema ID. Note that we do not disclose
 the actual data but only send hash values:

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.mountainminds</groupId>
 	<artifactId>three4j</artifactId>
-	<version>1.2.0</version>
+	<version>1.3.0</version>
 
 	<name>Three4J - Threema Client API for Java</name>
 	<description>Client API for Threema Messanger</description>

src/test/java/com/mountainminds/three4j/guide/ApiGuide.java

@@ -91,7 +91,7 @@ static ThreemaId lookups(Gateway gw) throws IOException {
 		// ### Lookups
 		//
 		// Sending a Threema message requires you to know the eight character
-		// long Threema ID of the receiver. Users my choose to register their
+		// long Threema ID of the receiver. Users may choose to register their
 		// telephone number or email address with their account which can then
 		// be queried to lookup their Threema ID. Note that we do not disclose
 		// the actual data but only send hash values: