Pkg version handling and choosable test backend for VSCode (again)

[cncastillo]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.52%. Comparing base (e7bfc1f) to head (cdcc171).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #455      +/-   ##
==========================================
- Coverage   90.52%   90.52%   -0.01%     
==========================================
  Files          51       51              
  Lines        2787     2786       -1     
==========================================
- Hits         2523     2522       -1     
  Misses        264      264              

Flag	Coverage Δ
base	88.20% <ø> (ø)
core	90.35% <ø> (-0.03%)	⬇️
files	93.55% <100.00%> (ø)
komamri	93.98% <100.00%> (ø)
plots	89.30% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
KomaMRIBase/src/KomaMRIBase.jl	100.00% <ø> (ø)
KomaMRICore/src/KomaMRICore.jl	100.00% <ø> (ø)
KomaMRICore/src/rawdata/ISMRMRD.jl	98.33% <ø> (-0.03%)	⬇️
KomaMRICore/src/simulation/SimulatorCore.jl	94.59% <ø> (ø)
KomaMRIFiles/src/KomaMRIFiles.jl	100.00% <ø> (ø)
KomaMRIFiles/src/Phantom/Phantom.jl	92.66% <100.00%> (ø)
KomaMRIPlots/src/KomaMRIPlots.jl	100.00% <ø> (ø)
src/KomaMRI.jl	100.00% <ø> (ø)
src/KomaUI.jl	99.27% <100.00%> (ø)