Metamorph TIFF: only populate Plate metadata if there are multiple wells
LZW: prevent reading beyond the end of the stream

Fixes #10525.
Merge pull request #430 from melissalinkert/rebased/develop/metamorph-tiff-plates

Metamorph TIFF: only populate Plate metadata if there are multiple wells (rebased onto develop)
Merge pull request #431 from melissalinkert/rebased/develop/10525

LZW: prevent reading beyond the end of the stream (rebased onto develop)