Update search operators

[valtlai]

Changes the search operators as follows:

• ~= to *= (matching CSS)
• ALL to &=
• SOME to |=

[oscarotero]

I like it and understand the logic:

• ~= to *=: Obviously.
• ALL TO &=: & is like AND operator, so makes sense because we want all values are present
• SOME TO |=: | is like OR operator, so makes sense because only one match is required.

[oscarotero]

Note that any condition without operator is interpreted as data.tags &=. So this new syntax should be updated also here:

lume/helpers/search.js

Lines 81 to 86 in ff5b9d6

	if (!arg.includes("=")) {
	if (!filter["data.tags ALL"]) {
	filter["data.tags ALL"] = [];
	}
	return filter["data.tags ALL"].push(arg);

[valtlai]

Updated that and also a regex (at the same time, I also deleted the unnecessary escapes inside the character classes).

[oscarotero]

Look good to me. Thanks!