Java 8 support#1

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jirikapoun wants to merge 5 commits into

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jirikapoun:master

Commits on Jul 10, 2017

fix build
lukashruby
committed

Commits on Aug 7, 2019

upgraded to JDK 8, replaced org.joda.time with java.time
Jiri Kapoun
committed
updated readme
Jiri Kapoun
committed

Commits on Jan 4, 2020

adjusted license
jirikapoun
committed

Commits on Jun 20, 2021

upgraded Spring version
jirikapoun
committed