调整 Proguard 设置以启用混淆和重复优化, 去除日志代码
Merge branch 'master' into feature/proguard-obfuscation

Conflicts:
	proguard.cfg
Merge branch 'master' into feature/proguard-obfuscation

Conflicts:
	proguard.cfg
以 debug 属性分离 debug 和 release 构建配置
Merge branch 'feature/proguard-obfuscation'