Merge branch 'main' of github.com:Qiskit/qiskit-terra into remove_par…

…ametrized_schedule

.github/ISSUE_TEMPLATE/BUG_REPORT.yaml

@@ -0,0 +1,50 @@
+name: 🐛 Bug report
+description: Create a report to help us improve 🤔.
+labels: ["bug"]
+
+body:
+  - type: markdown
+    attributes:
+      value: Thank you for reporting!  Please also use the search to see if there are any other relevant issues or pull requests.
+
+  - type: textarea
+    attributes:
+      label: Environment
+      description: For the version of Terra, please give the actual version number (_e.g._ 0.18.3) if you are using a release version, or the first 7-8 characters of the commit hash if you have installed from `git`.  If anything else is relevant, you can add it to the list.
+      # The trailing spaces on the following lines are to make filling the form
+      # in easier.  The type is 'textarea' rather than three separate 'input's
+      # to make the resulting issue body less noisy with headings.
+      value: |
+        - **Qiskit Terra version**: 
+        - **Python version**: 
+        - **Operating system**: 
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: What is happening?
+      description: A short description of what is going wrong, in words.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: How can we reproduce the issue?
+      description: Give some steps that show the bug.  A [minimal working example](https://stackoverflow.com/help/minimal-reproducible-example) of code with output is best.  If you are copying in code, please remember to enclose it in triple backticks (` ``` [multiline code goes here] ``` `) so that it [displays correctly](https://docs.github.com/en/github/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax).
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: What should happen?
+      description: A short description, including about the expected output of any code in the previous section.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Any suggestions?
+      description: Not required, but if you have suggestions for how a contributor should fix this, or any problems we should be aware of, let us know.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/ENHANCEMENT_REQUEST.yaml

@@ -0,0 +1,14 @@
+name: 💅 Enhancement request
+description: Suggest an improvement for this project 🆒!
+labels: ["type: enhancement"]
+
+body:
+  - type: markdown
+    attributes:
+      value: Please make sure to browse the opened and closed issues to make sure that this idea has not previously been discussed.
+
+  - type: textarea
+    attributes:
+      label: What is the expected enhancement?
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.yaml

@@ -0,0 +1,14 @@
+name: 🚀 Feature request
+description: Suggest an idea for this project 💡!
+labels: ["type: feature request"]
+
+body:
+  - type: markdown
+    attributes:
+      value: Please make sure to browse the opened and closed issues to make sure that this idea has not previously been discussed.
+
+  - type: textarea
+    attributes:
+      label: What should we add?
+    validations:
+      required: true

.github/workflows/coverage.yml

@@ -0,0 +1,29 @@
+name: Coverage report
+on:
+  push:
+  pull_request:
+    branches: ['main']
+concurrency:
+  group: ${{ github.repository }}-${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+jobs:
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: '3.8'
+      - name: Install dependencies
+        run: pip install tox coveragepy-lcov
+      - name: Run coverage report
+        run: tox -ecoverage
+      - name: Convert to lcov
+        run: coveragepy-lcov --output_file_path coveralls.info
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: coveralls.info

.github/workflows/randomized_tests.yml

@@ -0,0 +1,33 @@
+name: Randomized tests
+on:
+  schedule:
+    - cron:  '42 3 * * *'
+  workflow_dispatch:
+jobs:
+  randomized_tests:
+    name: Randomized tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: '3.8'
+      - name: Install dependencies
+        run: |
+          pip install -U -r requirements.txt -c constraints.txt
+          pip install -U -r requirements-dev.txt coveralls -c constraints.txt
+          pip install -c constraints.txt -e .
+          pip install "qiskit-ibmq-provider" -c constraints.txt
+          pip install "qiskit-aer"
+      - name: Run randomized tests
+        run: make test_randomized
+      - name: Create comment on failed test run
+        if: ${{ failure() }}
+        uses: peter-evans/create-or-update-comment@v1
+        with:
+          issue-number: 2645
+          body: |
+            Randomized tests failed at commit ${{ github.sha }}.
+
+            _Logs_: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}.

.mailmap

@@ -76,6 +76,8 @@ Ismail Yunus Akhalwaya <ismaila@za.ibm.com>
 Ismail Yunus Akhalwaya <ismaila@za.ibm.com> <30803146+ismaila-at-za-ibm@users.noreply.github.com>
 Jack J. Woehr <4604036+jwoehr@users.noreply.github.com>
 Jake Lishman <jake.lishman@ibm.com> <jake@binhbar.com>
+James R. Garrison <garrison@ibm.com>
+James R. Garrison <garrison@ibm.com> <jim@garrison.cc>
 James Seaward <58116376+JamesSeaward@users.noreply.github.com>
 Jan Müggenburg <jan.mueggenburg@ibm.com>
 Jan Müggenburg <jan.mueggenburg@ibm.com> <jan@oc6058543760.ibm.com>

.mergify.yml

@@ -20,4 +20,4 @@ pull_request_rules:
     actions:
       backport:
         branches:
-          - stable/0.18
+          - stable/0.19

.pylintrc

@@ -33,7 +33,7 @@ unsafe-load-any-extension=no
 # A comma-separated list of package or module names from where C extensions may
 # be loaded. Extensions are loading into the active Python interpreter and may
 # run arbitrary code
-extension-pkg-whitelist=retworkx, numpy, tweedledum
+extension-pkg-allow-list=retworkx, numpy, tweedledum
 
 
 [MESSAGES CONTROL]

CONTRIBUTING.md

@@ -10,6 +10,28 @@ https://qiskit.org/documentation/contributing_to_qiskit.html
 In addition to the general guidelines there are specific details for
 contributing to terra, these are documented below.
 
+### Contents
+* [Choose an issue to work on](#Choose-an-issue-to-work-on)
+* [Pull request checklist](#pull-request-checklist)
+* [Changelog generation](#changelog-generation)
+* [Release Notes](#release-notes)
+* [Installing Qiskit Terra from source](#installing-qiskit-terra-from-source)
+* [Test](#test)
+  * [Snapshot testing for visualizations](#snapshot-testing-for-visualizations)
+* [Style and Lint](#style-and-lint)
+* [Development Cycle](#development-cycle)
+  * [Branches](#branches)
+  * [Release Cycle](#release-cycle)
+* [Adding deprecation warnings](#adding-deprecation-warnings)
+* [Dealing with git blame ignore list](#dealing-with-the-git-blame-ignore-list)
+
+### Choose an issue to work on
+Qiskit Terra uses the following labels to help non-maintainers find issues best suited to their interests and experience level:
+
+* [good first issue](https://github.com/Qiskit/qiskit-terra/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22) - these issues are typically the simplest available to work on, perfect for newcomers. They should already be fully scoped, with a clear approach outlined in the descriptions.
+* [help wanted](https://github.com/Qiskit/qiskit-terra/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22) - these issues are generally more complex than good first issues. They typically cover work that core maintainers don't currently have capacity to implement and may require more investigation/discussion. These are a great option for experienced contributors looking for something a bit more challenging.
+* [short project](https://github.com/Qiskit/qiskit-terra/issues?q=is%3Aopen+is%3Aissue+label%3A%22short+project%22) - these issues are bigger pieces of work that require greater time commitment. Good options for hackathons, internship projects etc.
+
 ### Pull request checklist
 
 When submitting a pull request and you feel it is ready for review,

README.md

@@ -1,5 +1,5 @@
 # Qiskit Terra
-[![License](https://img.shields.io/github/license/Qiskit/qiskit-terra.svg?style=popout-square)](https://opensource.org/licenses/Apache-2.0)<!--- long-description-skip-begin -->[![Build Status](https://img.shields.io/travis/com/Qiskit/qiskit-terra/master.svg?style=popout-square)](https://travis-ci.com/Qiskit/qiskit-terra)[![Release](https://img.shields.io/github/release/Qiskit/qiskit-terra.svg?style=popout-square)](https://github.com/Qiskit/qiskit-terra/releases)[![Downloads](https://img.shields.io/pypi/dm/qiskit-terra.svg?style=popout-square)](https://pypi.org/project/qiskit-terra/)[![Coverage Status](https://coveralls.io/repos/github/Qiskit/qiskit-terra/badge.svg?branch=master)](https://coveralls.io/github/Qiskit/qiskit-terra?branch=master)<!--- long-description-skip-end -->
+[![License](https://img.shields.io/github/license/Qiskit/qiskit-terra.svg?style=popout-square)](https://opensource.org/licenses/Apache-2.0)<!--- long-description-skip-begin -->[![Build Status](https://img.shields.io/travis/com/Qiskit/qiskit-terra/master.svg?style=popout-square)](https://travis-ci.com/Qiskit/qiskit-terra)[![Release](https://img.shields.io/github/release/Qiskit/qiskit-terra.svg?style=popout-square)](https://github.com/Qiskit/qiskit-terra/releases)[![Downloads](https://img.shields.io/pypi/dm/qiskit-terra.svg?style=popout-square)](https://pypi.org/project/qiskit-terra/)[![Coverage Status](https://coveralls.io/repos/github/Qiskit/qiskit-terra/badge.svg?branch=main)](https://coveralls.io/github/Qiskit/qiskit-terra?branch=main)<!--- long-description-skip-end -->
 
 **Qiskit** is an open-source framework for working with noisy quantum computers at the level of pulses, circuits, and algorithms.
 
@@ -15,7 +15,7 @@ pip install qiskit
 
 PIP will handle all dependencies automatically and you will always install the latest (and well-tested) version.
 
-To install from source, follow the instructions in the [documentation](https://qiskit.org/documentation/contributing_to_qiskit.html#install-terra-from-source).
+To install from source, follow the instructions in the [documentation](https://qiskit.org/documentation/contributing_to_qiskit.html#install-install-from-source-label).
 
 ## Creating Your First Quantum Program in Qiskit Terra