flav-io/flavio: v2.2.0

New features The new flavio.citations module provides a bibliography of theory papers (thanks to @MJKirk) At the end of a flavio computation, the theory papers on which the computation is based can be obtained from flavio.citations.set in terms of set of INSPIRE citation keys. The bibliography can be reset by calling flavio.citations.reset(). The new theory_citations() method of the Observable class returns the theory papers on which the prediction of a given observable is based. New observable The ratio of the branching ratio of B0→Kγ and the time-integrated branching ratio of Bs →φγ, `BR(B0->Kgamma)/BR(Bs->phigamma)` (thanks to @MartinoBorsato for the suggestion) New measurements The B+→K*μμ angular observables by LHCb The combination of Bs→μμ by ATLAS, CMS, and LHCb Some LEP measurement (thanks to @MJKirk) Some LHCb and ATLAS measurements (thanks to @olcyr) Bug fixes Some bugs in the implementation of mu-e conversion have been fixed (thanks to @xmarcano for reporting the issue) A problem with the PyYAML loader SafeIncludeLoader on some Windows systems has been fixed Other improvements flavio now supports Python 3.9 The PyYAML loader SafeIncludeLoader now supports absolute file paths in the !include and !include_merge_list constructors The config files have been updated to avoid matplotlib deprecation warnings (thanks to @MJKirk) The interface to iminuit has been upgraded to use iminuit v2.x End of support for Python 3.5 This release requires at least Python 3.6. Python 3.5 has reached end-of-life on 30 September 2020. If you are on an outdated system and cannot update Python, have a look at conda. It allows you to install the newest version of Python in a virtual environment without root privileges. Conda is also the best choice if you are on Windows