release version 2.2.27.4-1.1.0

update readme
fix resource visibility in module-info.java
add lib/libjxtp.dylib to .gitignore

升级 XTP 至 2.2.27.4

update README

升级 XTP 至 2.2.25.5

迁移至 Maven Central
升级 gradle 至 6.8.2
添加 gradle-wrapper.jar

更新 bintray package label