#33 upload to maven central

required to be full open source: won't fix in near future

• update pom.xml (license, developer, scm, repositories)
• register user in JIRA
• register project in JIRA

https://central.sonatype.org/publish/publish-maven/ https://central.sonatype.org/publish/publish-guide/

mvn versions:set -DnewVersion=1.2.3
jdk8
mvn clean deploy -P common,jdk8,release
jdk11
mvn clean deploy -P jdk11,release

2.7.0 released

@todo promote failed because missing javadoc in shaded artifact & not publicly known GPG signatures