demand

demand is used at run time in 4 crates.

Number of dependers	demand version	Downloads/month
3	1.2.4	3.4K
0	1.1.2	1.8K
1	0.3.0	36

Depender (with downloads and own rev deps)			demand version
9.1K		mise		^1.1.2
500		key		^1.1.0
460		zeeper		^1.2.2
		rtx-cli		^0.3