chore: upgrade version name(1.7.2->1.7.3) code(63->64)

Author: Jacksgong

CHANGELOG-ZH.md

@@ -2,6 +2,14 @@
 
 > [ Change log in english](https://github.com/lingochamp/FileDownloader/blob/master/CHANGELOG.md)
 
+## Version 1.7.3
+
+_2018-04-20_
+
+#### 修复
+
+修复: 修复由于在下载结束时`fd`没有被主动释放，导致当有大量的任务被不断的发起执行时有可能引发的OOM问题。
+
 ## Version 1.7.2
 
 _2018-03-14_

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 > [中文迭代日志](https://github.com/lingochamp/FileDownloader/blob/master/CHANGELOG-ZH.md)
 
+## Version 1.7.3
+
+_2018-04-20_
+
+#### Fix
+
+Fix: fix `fd` isn't released manually when download finished which may raise oom when there are a large number of tasks that are continuously initiated.
+
 ## Version 1.7.2
 
 _2018-03-14_

README-zh.md

@@ -67,7 +67,7 @@ Android 文件下载引擎，稳定、高效、灵活、简单易用
 在项目中引用:
 
 ```groovy
-compile 'com.liulishuo.filedownloader:library:1.7.2'
+implementation 'com.liulishuo.filedownloader:library:1.7.3'
 ```
 
 > 如果是eclipse引入jar包参考: [这里](https://github.com/lingochamp/FileDownloader/issues/212#issuecomment-232240415)

README.md

@@ -31,7 +31,7 @@ FileDownloader is installed by adding the following dependency to your `build.gr
 
 ```groovy
 dependencies {
-    compile 'com.liulishuo.filedownloader:library:1.7.2'
+    implementation 'com.liulishuo.filedownloader:library:1.7.3'
 }
 ```
 

gradle.properties

@@ -1,5 +1,5 @@
-VERSION_NAME=1.7.2
-VERSION_CODE=63
+VERSION_NAME=1.7.3
+VERSION_CODE=64
 BUILD_TOOLS_VERSION=27.0.3
 COMPILE_SDK_VERSION=27