Support .editorconfig

[docwhat]

Add support for .editorconfig configuration files for flags like:

• --max-line-length=n
• --indent-size=n

[sigmavirus24]

No. We aren't going to parse arbitrary things from a file we don't own. Our config logic is already disgusting spaghetti code from 10 years ago, and it works fine enough even though it's unmaintainable. We're not going to make it worse.

[docwhat]

Fair enough. At least it is on record now for the next person who searches. :-)