Merge pull request #22 from neow3j/develop

Updates for neow3j 3.21.2

.gitignore

@@ -1 +1,2 @@
 .idea/
+.DS_Store

docs/neo-n3/README.md

@@ -2,7 +2,7 @@
     <img src="../images/neow3j-neo3.png" alt="Logo" id="logo">
 </div>
 
-<h1 id="cover-header">neow3j <small>3.21.1</small></h1>
+<h1 id="cover-header">neow3j <small>3.21.2</small></h1>
 
 Neow3j is a development toolkit that provides easy and reliable tools to build Neo dApps and Smart Contracts using the Java
 platform (Java, Kotlin, Android). It is an open-source project developed by the Neo community and maintained by
@@ -36,7 +36,7 @@ To make use of all neow3j SDK features, add the `io.neow3j:contract` dependency
 __Gradle__
 
 ```groovy
-implementation 'io.neow3j:contract:3.21.1'
+implementation 'io.neow3j:contract:3.21.2'
 ```
 
 __Maven__
@@ -45,7 +45,7 @@ __Maven__
 <dependency>
     <groupId>io.neow3j</groupId>
     <artifactId>contract</artifactId>
-    <version>3.21.1</version>
+    <version>3.21.2</version>
 </dependency>
 ```
 
@@ -57,7 +57,7 @@ you want to play around with the devpack, add the `io.neow3j:devpack` dependency
 __Gradle__
 
 ```groovy
-implementation 'io.neow3j:devpack:3.21.1'
+implementation 'io.neow3j:devpack:3.21.2'
 ```
 
 __Maven__
@@ -66,7 +66,7 @@ __Maven__
 <dependency>
     <groupId>io.neow3j</groupId>
     <artifactId>devpack</artifactId>
-    <version>3.21.1</version>
+    <version>3.21.2</version>
 </dependency>
 ```
 

docs/neo-n3/smart_contract_development/neowjava.md

@@ -57,15 +57,18 @@ byte. The methods do not truncate the argument, but throw an exception if the va
 
 ### Strings
 
-Intuitively you can use Java's `String` type for strings. But be aware that on the NeoVM a `String` is not represented
+You can use Java's `String` type for strings of text. But be aware that on the NeoVM a `String` is not represented
 as an object, but as a UTF8-encoded ByteString stack item. This means that you cannot make use of `String` instance
-methods like `contains()` or `indexOf()`. The exception is the `length()` method, which works as expected. Checkout the
-`io.neow3j.devpack.Helper` and `io.neow3j.devpack.StringLiteralHelper` clases which offer of String related helper
-methods.
+methods like `contains()` or `indexOf()`. The exception is the `length()` method, which works but will give you the byte
+length of the string not the character count. Instead use `io.neow3j.devpack.contracts.StdLib.strLen()` to get the
+character count of a `String`.
 
-Neow3j supports string concatenation with the `+` operator but mixing in other types is not. For example, 
+Neow3j supports string concatenation with the `+` operator. But, mixing in other types is not supported. For example, 
 `"hello" + "world"` works, but `"hello" + 5` does not.
 
+Checkout the `io.neow3j.devpack.Helper` and `io.neow3j.devpack.StringLiteralHelper` classes which offer String related
+helper methods.
+
 ### Arrays
 
 You can use arrays as usual. You will only face some restrictions with multi-dimensional arrays. When initialising a

docs/neo-n3/smart_contract_development/setup_and_compilation.md

@@ -46,7 +46,7 @@ contract compilation via a Gradle task called `neow3jCompile`. The Java plugin i
 ```groovy
 plugins {
     id 'java'
-    id 'io.neow3j.gradle-plugin' version "3.21.1"
+    id 'io.neow3j.gradle-plugin' version "3.21.2"
 }
 ```
 
@@ -90,13 +90,13 @@ Then we need to define the dependencies, which are `io.neow3j:devpack` for writi
 
 ```groovy
 dependencies {
-    implementation 'io.neow3j:devpack:3.21.1'
+    implementation 'io.neow3j:devpack:3.21.2'
 
     testImplementation 'org.junit.jupiter:junit-jupiter:5.9.0',
-            'io.neow3j:devpack-test:3.21.1',
+            'io.neow3j:devpack-test:3.21.2',
             'ch.qos.logback:logback-classic:1.2.11'
 
-    deployImplementation 'io.neow3j:compiler:3.21.1',
+    deployImplementation 'io.neow3j:compiler:3.21.2',
             'ch.qos.logback:logback-classic:1.2.11'
 }
 ```