add changelog for v2.7.2 (#291)

Changelog.md

@@ -1,3 +1,47 @@
+## v2.7.2
+(2021-03-24)
+Please read documentation of Java SDK.
+
+* [English User Handbook](https://fisco-bcos-documentation.readthedocs.io/en/latest/docs/sdk/java_sdk/index.html)
+* [Chinese User Handbook](https://fisco-bcos-documentation.readthedocs.io/zh_CN/latest/docs/sdk/java_sdk/index.html#)
+* [Chinese WIKI](https://github.com/FISCO-BCOS/java-sdk/wiki)
+
+Added:
+* Add an interface that supports remotely calling signature services to assemble and send transactions(AssembleTransactionWithRemoteSignProcessor, RemoteSignProviderInterface)
+
+Fixed:
+ * Fix the problem that the ContractLoader of the java sdk is loaded incorrectly in some scenarios, which causes the deployment and call of the contract to fail [#264](https://github.com/FISCO-BCOS/java-sdk/issues/264)
+ * Fix the problem of errors when loading certificates and private keys from the classpath path in the windows environment [#260](https://github.com/FISCO-BCOS/java-sdk/issues/260)
+ * Fix the problem that the FromBlock of EventLogParams does not take effect [#253](https://github.com/FISCO-BCOS/java-sdk/issues/253)
+ * Fix the problem that the Java SDK can only read the private key generated by openssl with the -key name parameter added [#249](https://github.com/FISCO-BCOS/java-sdk/issues/249)
+
+
+Compatibility
+
+* FISCO BCOS v2.0+
+* AMOP Not compatible with Web3SDK
+----
+请参考文档：
+* [英文版用户手册](https://fisco-bcos-documentation.readthedocs.io/en/latest/docs/sdk/java_sdk/index.html)
+* [中文版用户手册](https://fisco-bcos-documentation.readthedocs.io/zh_CN/latest/docs/sdk/java_sdk/index.html#)
+* [中文版WIKI](https://github.com/FISCO-BCOS/java-sdk/wiki)
+
+添加:
+* 增加支持远程调用签名服务来组装并发送交易的接口(AssembleTransactionWithRemoteSignProcessor, RemoteSignProviderInterface)
+
+
+修复：
+
+ * 修复某些场景下Java SDK的ContractLoader加载出错，导致部署和调用合约失败的问题 [#264](https://github.com/FISCO-BCOS/java-sdk/issues/264)
+ * 修复windows环境下从classpath路径下加载证书和私钥出错的问题 [#260](https://github.com/FISCO-BCOS/java-sdk/issues/260)
+ * 修复EventLogParams的FromBlock不生效的问题 [#253](https://github.com/FISCO-BCOS/java-sdk/issues/253)
+ * 修复Java SDK只能读取openssl添加-key name参数的生成的私钥的问题 [#249](https://github.com/FISCO-BCOS/java-sdk/issues/249)
+
+
+适配性：
+* 适配FISCO BCOS v2.0+
+* AMOP功能不兼容Web3SDK
+
 ## v2.7.1
 (2020-12-24)
 Please read documentation of Java SDK.
@@ -199,4 +243,4 @@ Java SDK是基于Web3SDK重构的，它包含的新特性有：
 
 适配性：
 * 适配FISCO BCOS v2.0+。
-* 不适配Web3SDK。意思是，如果两个用户想使用AMOP功能进行通信，他们必须要么同时使用Java SDK，要么同时使用Web3SDK。
+* 不适配Web3SDK。意思是，如果两个用户想使用AMOP功能进行通信，他们必须要么同时使用Java SDK，要么同时使用Web3SDK。