Coloned amount not parsed correctly

[wvengen]

With the loose parser, a, <1%: b yields:

{:amount=>"<1%", :contains=>[{:name=>"a"}]}

though it should yield

{:contains=>[{:name=>"a", :contains=[{:name=>"b", :amount=>"<1%"]}]}

[wvengen]

Ingredient lists from the USA often contain something like ..., less than 2% of: ..., which has the same issue as above (and often isn't even parsed in the strict parser).