Spelling of negative numbers in German: "Minussomething" vs "minus something"

[rotdrop]

Many thanks for this nice piece of code!

However: I am pretty sure that in German the minus is spelled out separated by a space and in lowercase. But of course: being a German I still may be wrong though the stock PHP NumberFormatter also handles it that way. So it probably should be:
minus fünfzehn instead of the Minusfünfzehn (i.e. spelled out -15 in German).

[kwn]

Hey @rotdrop. Thanks for reporting the issue. It's been fixed in #172 and released in 2.9.1

[rotdrop]

Thank you!