Add parse(BigFloat, ...) back

[YingboMa]

No description provided.

[ChrisRackauckas]

Lgtm

[coveralls]

Coverage increased (+0.2%) to 92.043% when pulling 33650e7 on myb/0.7 into 9308ccb on master.

[ChrisRackauckas]

Can you also fix the Nord tests?

[codecov]

Codecov Report

Merging #453 into master will increase coverage by 0.49%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #453      +/-   ##
==========================================
+ Coverage   95.35%   95.84%   +0.49%     
==========================================
  Files          78       62      -16     
  Lines        9393     6937    -2456     
==========================================
- Hits         8957     6649    -2308     
+ Misses        436      288     -148

Impacted Files	Coverage Δ
src/tableaus/feagin_tableaus.jl	100% <ø> (ø)	⬆️
src/tableaus/low_order_rk_tableaus.jl	100% <ø> (ø)	⬆️
src/tableaus/verner_tableaus.jl	100% <ø> (ø)	⬆️
src/tableaus/high_order_rk_tableaus.jl	100% <ø> (ø)	⬆️
src/nlsolve_utils.jl	54.79% <0%> (-20.55%)	⬇️
src/alg_utils.jl	93.75% <0%> (-2.75%)	⬇️
...rform_step/adams_bashforth_moulton_perform_step.jl	89.55% <0%> (-0.81%)	⬇️
src/solve.jl	79.09% <0%> (-0.38%)	⬇️
src/dense/interpolants.jl	99.43% <0%> (-0.03%)	⬇️
... and 27 more

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[ChrisRackauckas]

MWTP