Add releases folder with Terra 0.6 and 0.7 release guides.

[dongreenberg]

Introduces a "releases" folder for notebook guides to major Qiskit releases, including guides for Terra 0.7 and 0.6 (Ali agreed this made sense). I am working on the guide for Aqua 0.4 presently.

(Third time's a charm 😁)

[jaygambetta]

you need to rerun and you have some errors. I see hex counts as well.

[jaygambetta]

Also now we have updated to master please push there

[jaygambetta]

See above

[mtreinish]

sigh, I apologize for that. Github clearly did the wrong thing when I adjusted the base from the terra branch to master. It looks like it's trying to remerge the old state of master from when things branched. I have no idea how github could screw up a simple rebase. I'll fix this locally and force push

[mtreinish]

OK, I've manually rebased this onto master (the issue was that terra0_7 and master don't rebase cleanly anymore so there are unresolvable merge conflicts elsewhere in the history unrelated to this patch) so I just bypassed that and targeted the commit on master for you. @dongreenberg you will still need to rerun it though per @jaygambetta review earlier. I only fixed the git side of things.

[attp]

@dongreenberg: from qiskit.transpiler.passes import BasicMapper, CXCancellation, LookaheadMapper causes an error: ImportError: cannot import name 'BasicMapper' from 'qiskit.transpiler.passes'

[dongreenberg]

• Notebook corrected and runs.
• The hex is WAI, part of demonstrating to users why they should not use results.data().

[jaygambetta]

These look good

In terra 0.6 can you remove the interacting plotting or whatever is making the red text of errors.

In terra 0.7

• don't use the legacy i would just use aer and basic aer.
• the stocastic swap is there for the mapper
• also update the backends

[dongreenberg]

Thanks, didn't see that. Cleaned everything up so both files look presentable in github.

[jaygambetta]

Can you switch from mapper to StochasticSwap. This is what meant above

[jaygambetta]

Also, there is still not anything about the backend updates.

[jaygambetta]

I also see that you have LegacySimulators this should Aer

[jaygambetta]

Can you also make the location just releases not qiskit/resleases