implemented Landsat 4 support, added test
(cherry picked from commit f98ba0b)
implemented Landsat 4 support, added test
(cherry picked from commit 20bd0d5)
intermediate - add geophysical unit and noDataValue to checks
(cherry picked from commit 8d16a59)
ensured that all images have the same tiling
(cherry picked from commit a9ef8d7)
updated help for landsat changes
(cherry picked from commit aac1c22)