add bisinc interpolators
modified ti support 11-point and 21-point bi-sinc interpolators
add tests
Merge branch 'snap-1.0.x'
Merge branch 'master' of https://github.com/arraydev/s1tbx
moved from rstb
modified to relax checks on noDataValue
formatting
update tests
handle Stripmap SLC
Merge branch 'snap-1.0.x'
merge
Merge branch 'snap-1.0.x'
update help
Merge branch 'snap-1.0.x'
update help
Merge branch 'snap-1.0.x' of https://github.com/arraydev/s1tbx into snap-1.0.x
update tests
Handle case where point2 falls outside of the raster
update tests