Tqdm

Tqdm is used at run time in 3 crates.

Number of dependers	Tqdm version	Downloads/month
2	0.5.2	500
0	0.4.4	4.8K
1	0.3.1	170

Depender			Tqdm version
		bra_ket		^0.5.1
		probs		^0.3
		tqrs		^0.5.0