4.5.0

update samples

update samples

Merge pull request shimat#980 from shimat/fix_Mat

fix Mat right, bottom and Contains

Merge pull request shimat#957 from shimat/UnmanagedType_LPStr

enable UnmanagedType.LPUTF8Str for non-Windows platforms

update samples

Merge pull request shimat#901 from shimat/fix_ffmpeg

Fix .props & enhance Aruco

Merge pull request shimat#899 from shimat/4.3

OpenCV 4.3.0

Merge pull request shimat#872 from matthias-bl/master

Add MergeMertens, MergeExposures, MergeDebevec

fix LANG_JP comments