merge insar
dem returns doubles
update dem positions
update to support C2
refactor polsar tools
refactor speckle filters
update test
optimize code
optimize code
Merge branch 'snap-1.1.x'

Conflicts:
	s1tbx-rcp/src/main/java/org/esa/nest/dat/S1TBXApp.java
Merge branch 'master' of https://github.com/senbox-org/s1tbx