Deprecate JulianDay in favor of https://github.com/igr/julian-day

Remove get system pid from SystemInfo

What's Changed

• Update JulianDate calculations by @cusher in #12
• Improving JulianDateTime by @igr in #13

Full Changelog: v6.1.0...v6.2.0

• Added BeanUtil exceptions.

• Added OSGI info
• Added StringTemplateMatcher

Essential utilities from Jodd Core merged with BeanUtil are promoted to the new repo and the new version!