* Sequence properties dialog: 
 - fixed bug with <= 0 pixel size and time invertal
* some NPE fixes.
* others minors fixes / tweaks.
* fixed minor issue on VTK panel initialization on MacOSX.
* give more time on Raycaster renderer before switching to finest mode
during interactions.
javadoc
Fixed typo in definition.
change name plan > plane
minors fixes.
* Improved headless support.
* Fixed a bug when opening image from the Serie Selection dialog.
* ROI Panel:
 - now display channel information (as intensity) in separate column
 - more reactive when dealing wit1hout many ROIs
 - fixed some refresh issues.
* Fixed a possible bug in the search bar refresh timer.
* Minors changes in XMLUtil.
Merge branch 'master' of https://Stephane-D@github.com/Icy-imaging/Icy-Kernel.git
fixed typo in ThreadUtil.
Small bug fix on deprecated method.