Improve documentation for InputStream.peek. See 1179.
Improve documentation for InputStream.peek. See 1179.

Mention that peek() is allowed to always return zero for stream types that don't have an internal buffer.

machindertechnologies/vibe.d,AndreyMZ/vibe.d,redstar/vibe.d,nathanchristenson/vibe.d,schuetzm/vibe.d,etcimon/vibe.d,nathanchristenson/vibe.d,mfrischknecht/vibe.d,yannick/vibe.d,DBankov/vibe.d,etcimon/vibe.d,ColdenCullen/vibe.d,veelo/vibe.d,chalucha/vibe.d,nathanchristenson/vibe.d,Geod24/vibe.d,Mihail-K/vibe.d,Kozzi11/vibe.d,gedaiu/vibe.d,rejectedsoftware/vibe.d