ENH: align Wald pre-test, confidence bands, and bootstrap quantiles

[jordandeklerk]

See the changes in bcallaway11/did#253 and bcallaway11/did#251

[codecov-commenter]

Codecov Report

❌ Patch coverage is 91.80328% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
moderndid/did/compute_att_gt.py	80.00%	4 Missing ⚠️
moderndid/did/att_gt.py	96.77%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (eb09b06) and HEAD (251e399). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (eb09b06)	HEAD (251e399)
	13	12

Files with missing lines	Coverage Δ
moderndid/did/compute_aggte.py	92.64% <100.00%> (+0.10%)	⬆️
moderndid/did/mboot.py	93.87% <100.00%> (-2.05%)	⬇️
moderndid/did/att_gt.py	85.18% <96.77%> (+4.69%)	⬆️
moderndid/did/compute_att_gt.py	84.01% <80.00%> (+1.27%)	⬆️

... and 46 files with indirect coverage changes

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