show millisecond time for created at (fixes #45)
PropertyEditorFrame: fix duplicate property shown (fixes #47)
CProp: support getList(String).set(int, String)
move jp.mydns.turenar.twclient.{ => conf.}ClientProperties
PropertyChangeListener -> PropertyUpdateListener (fixes #48)

PropertyUpdateListener has get*Value that returns String!
Merge branch 'turenar/iss47-propeditor-show-duplicate-key'
Merge branch 'turenar/iss48-cprop-PropertyChangeListener-has-object-value'
Merge branch 'turenar/iss45'

Conflicts:
	elnetw-core/src/main/java/jp/mydns/turenar/twclient/TwitterClientMain.java