Becquerel

Adds pre-commit to the CI and fixes python versions for the pypi deployment action (289)

Overview

Becquerel `v0.4.1` contains a new set of features, bug fixes, CI/CD, and updated copyright. See below for details.

Features

* 237 add-specific-activity
* 238 improve-fit-guesses
* 239 plot-fit-unc
* 235 update-date
* 252 constant-min-0
* 250 cal-plot
* 280 feature-sqrt-binning
* 248 new-calibration
* 282 from-listmode-cal

Fixes

* 231 store-cal-again
* 249 hotfix-spec-fit-backend
* 254 fix-peakfilter-fwhm
* 264 fix_self_fwhm
* 259 index_error
* 265 cal-fit-stats
* 266 edit-peakfinder
* 251 iminuit
* 274 fix_npfloat_npint
* 275 fix_lintresh
* 276 small-fix
* 279 fix-issue-257

CI/CD

* 242 github-actions-black-format
* 262 pytest_black
* 260 precommit
* 246 gh-actions-coveralls
* 267 pin-black-21.4b2
* 269 run-actions-on-schedule-and-manually
* 278 test-spec-act
* 285 pypi-deploy
* 288 add-python39-to-ci

Admin

* 241 fix-readme
* 284 copyright-2021
* 287 v0.4.1

* Adds the `fitting` module
* Bug fixes for `IsotopeQuantity`
* Move rebinning from using `numba.jit` to `numba.vectorize` and `numba.guvectorize`
* Change repo branches from `master`/`develop` to single `main` branch

* Fix problems and raise warnings related to recent query changes on the NNDC side

* Let find_bin_index find indices for multiple x values (199)
* Add get_bin_properties and change default: find_bin_index(use_kev=None) (203)
* Issue tests 200: Spectrum tests and associated changes to bin-related methods and docstrings (201)
* Update travis build spec, numba and llvmlite (204)
* Update requirements to deal with python2/3 llvmlite issue (205)

* Add warning filter for NNDC query for unclosed socket (162, 192)
* Fix Iterable import warning in python3 (193)