[maven-release-plugin] copy for tag nanohttpd-project-2.3.1

[maven-release-plugin] copy for tag nanohttpd-project-2.3.0

[maven-release-plugin] copy for tag nanohttpd-project-2.2.0

Release 2.1.0

Release version 2.0.5

Updated build to 2.0.4 version.

Merge pull request NanoHttpd#39 from NanoHttpd/keep-alive-support

Keep alive support

2.0.2 Release

2.0.0 Release

NanoHTTPD JDK 1.1 branch, version 1.28