Update C# Implementation of JPatch

[Mgamerz]

In September 2020, Joris Heirbaut released a new version of JojoDiff, which very lightly altered the diff file format. While old patches will work on the new application tool, new diffs will not work on the old code. The implementation changes are as follows:

Hi,
The only change is that the ESC-MOD sequence is now the default when a new operation sequence is needed 
(at the start of a file or after an EQL, DEL or BKT operation). It's a small efficiency gain of 2 bytes, but also simplifies the code.
Thank's for using jdiff !
Best regards,
Joris Heirbaut

The JPatch.cs implementation I wrote needs to be updated to account for these so I can leverage the updated patch files, as the new diffing algorithm seems to be more efficient.

[mirh]

I see you are already working on it..
But by any chance, what's its usage here?
Couldn't vcdiff, bsdiff or xdiff be better?

[Mgamerz]

Cause on ME3Tweaks there is about 4200 patches in jdiff format already. No point in changing things since none of the old ones would work, plus I do not want external dependencies (managed or native) for it. I dynamically generate many of these patches on modmaker.

[Mgamerz]

Implemented in 5e59760

[mirh]

Mhh I see.