Mthree

M3 version 3

M3 v3 is being released to support Qiskit 2.x, and fix a few issues with packaging. Longer term, it begins to include some tweaks to the internal code that yield better bit-strings for calibration, and will ultimately allow for a measurement error mitigation routine that is tailored for expectation values.

A bug fix release for parsing ISO datetimes in Python < 3.11

A release that includes updates for providers using `BackendV1`.

This also includes several under the hood updates that were for v3, but are included here since this release was not expected.

This release moves M3 to use the IBM Runtime `SamplerV2` for executing the calibration circuits. This will break usage on other HW platforms, e.g. IQM, but I am unsure how to better handle this at present, and will push that to v3.0. There is no major feature update here save for this, so (non-IBM) users can stick with v2.6.3 if desired.

**This will be the last release before a major rework resulting in M3 v3.0**

Other features:

- Users can specify the execution mode used to execute the calibration circuits, i.e. users can use the same `Batch` or `Session` to run the calibration circuits and other circuits. An example is added to the documentation.

This release fixes a compatibility issue with Scipy < 1.11.0 and Python 3.8.

A release to fix pypi uploading