prepare for 5.2.1 release

README.md

@@ -3,15 +3,15 @@
 [![Discord](https://img.shields.io/discord/778301671302365256?logo=Discord)](https://discord.gg/n27zjVTbDz)
 [![Java CI with Maven on Push](https://github.com/knowm/XChange/actions/workflows/maven.yml/badge.svg?event=status)](https://github.com/knowm/XChange/actions/workflows/maven.yml)
 
-XChange is a Java library providing a simple and consistent API for interacting with 60+ Bitcoin and other crypto currency exchanges, providing a consistent interface for trading and accessing market data.
+XChange is a Java library providing a simple and consistent API for interacting with 60+ Bitcoin and other cryptocurrency exchanges, providing a consistent interface for trading and accessing market data.
 
 ## Important!
 
 The world of Bitcoin changes quickly and XChange is no exception. For the latest bugfixes and features you should use the [snapshot jars](https://oss.sonatype.org/content/groups/public/org/knowm/xchange/) or build yourself from the `develop` branch. See below for more details about building with Maven. To report bugs and see what issues people are currently working on see the [issues page](https://github.com/knowm/XChange/issues).
 
 ## Description
 
-XChange is a Java based library providing a simple and consistent API for interacting with a diverse set of crypto currency exchanges.
+XChange is a Java based library providing a simple and consistent API for interacting with a diverse set of cryptocurrency exchanges.
 
 Basic usage is very simple: Create an `Exchange` instance, get the appropriate service, and request data. More complex usages are progressively detailed below.
 
@@ -148,12 +148,12 @@ Add the following dependencies in your pom.xml file. You will need at least xcha
 <dependency>
   <groupId>org.knowm.xchange</groupId>
   <artifactId>xchange-core</artifactId>
-  <version>5.2.0</version>
+  <version>5.2.1</version>
 </dependency>
 <dependency>
   <groupId>org.knowm.xchange</groupId>
   <artifactId>xchange-XYZ</artifactId>
-  <version>5.2.0</version>
+  <version>5.2.1</version>
 </dependency>
 ```
 
@@ -163,7 +163,7 @@ If it is available for your exchange, you may also want to use the streaming API
 <dependency>
   <groupId>org.knowm.xchange</groupId>
   <artifactId>xchange-stream-XYZ</artifactId>
-  <version>5.2.0</version>
+  <version>5.2.1</version>
 </dependency>
 ```
 
@@ -179,7 +179,7 @@ For snapshots, add the following repository to your pom.xml file.
 
 The current snapshot version is:
 
-    5.2.1-SNAPSHOT
+    5.2.2-SNAPSHOT
 
 ## Building with Maven