"does not contain" table filter

[simonw]

I had to do this:

But I'd like to do it more like this - with a "does not contain" filter which does not yet exist:

[simonw]

Relevant code:

datasette/datasette/filters.py

Lines 271 to 290 in c863443

	TemplatedFilter(
	"not",
	"!=",
	'"{c}" != :{p}',
	lambda c, v: "{c} != {v}" if v.isdigit() else '{c} != "{v}"',
	),
	TemplatedFilter(
	"contains",
	"contains",
	'"{c}" like :{p}',
	'{c} contains "{v}"',
	format="%{}%",
	),
	TemplatedFilter(
	"endswith",
	"ends with",
	'"{c}" like :{p}',
	'{c} ends with "{v}"',
	format="%{}",
	),

[simonw]