Wanted convolution edgeHandling example

[mikakaraila]

Expected Behavior

How to use convolution function optional parameters like edgeHandling.

Current Behavior

No clear or working example.

Failure Information (for bugs)

TypeScript interface seems to need string, but Jimp.EDGE_WRAP etc. are defined as numbers. Convolution code itself expects function as callback.

Steps to Reproduce

• Jimp Version: 0.16.1
• Operating System: Windows 10
• Node version: nodev12.16.2

Failure Logs

[kevinforrestconnors]

https://github.com/oliver-moran/jimp/blob/53ff9d1266207f7f674233f465ec358274510511/packages/plugin-color/test/convolution.test.js#L95

It expects a number, but the type is defined as string.

[kevinforrestconnors]

@mikakaraila to fix, you can cast it to a string. But this could be fixed..