PPP

PPP is used at run time in 5 crates (of which 1 optionally).

Number of dependers	PPP version	Downloads/month
4	2.2.0	16K
1	1.2.2	15K

Depender			PPP version
		acme-dns-rust		^1
		asport-client		^2.2.0
		ppp-stream		^2
		trakt		^2.2
		hyper-server	optional	^2.2.0