[maven-release-plugin] copy for tag ical4j-1.0.6

[maven-release-plugin] prepare release ical4j-1.0.5.2

[maven-release-plugin] prepare release ical4j-1.0.5.1

[maven-release-plugin] prepare release ical4j-1.0.5

[maven-release-plugin] prepare release ical4j-1.0.4

[maven-release-plugin] prepare release ical4j-1.0.3

[maven-release-plugin] prepare release ical4j-1.0.2

fixup commit for tag 'ical4j-1_0_1'

fixup commit for tag 'ical4j-1_0'