Consider not using LCS by default or allow switching it off

[nbarrientos]

Hi,

Hashdiff uses LCS by default when comparing arrays. This algorithm produces a friendlier and easier to read diff for humans, but at high cost O(n²).

Would you consider a patch to either disable LCS or perhaps to allow switching it off via the command line? I'd happy to prepare it.

Thanks.

[ahayworth]

@nbarrientos Yes, I think an option to toggle LCS (on by default) would be reasonable. I'll be happy to review such a PR! 😄