[x] I have written a descriptive pull-request title
[x] I have verified that there are no overlapping pull-requests open
[x] I have verified that I am following the existing coding patterns and practice as demonstrated in the repository. These follow strict Stylecop rules :cop:.
[x] I have provided test coverage for my change (where applicable)
Description
Fixes #2771 where the filter method was ignored when encoding PNGs. Also fixes a SIMD accelerated unsigned integer overflow defect in several of the filters which was masked by this issue.
Prerequisites
Description
Fixes #2771 where the filter method was ignored when encoding PNGs. Also fixes a SIMD accelerated unsigned integer overflow defect in several of the filters which was masked by this issue.