#153 When there are empty lines between blocks, create one big block

[Sir Zooro]

I am merging big file where someone fixed whitespaces in whole file. I have multiple blocks like this:

diff #1
empty line(s)
diff #2
empty line(s)
diff #3

I would like to see this as a one big block to merge. Please add option to allow this way of operation.

Empty lines in example above can contain white spaces.