Hpvsim

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- Adds cross-protection functionality to t-cell immunity and adds `sev_imm` attribute to people
- *Github info* PR `564 <https://github.com/amath-idm/hpvsim/pull/564>`__

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- Fixes bug that caused location data to be loaded twice
- *Github info* PR `546 <https://github.com/amath-idm/hpvsim/pull/546>`__

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- Fixes bug that misses some ways you can specify sex for vaccination
- *Github info* PR `555 <https://github.com/amath-idm/hpvsim/pull/555>`__

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- Fixes bug that never computed cancer deaths by age
- *Github info* PR `554 <https://github.com/amath-idm/hpvsim/pull/554>`__

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- Sets time to and date of HIV death for those not on ART and who fail on ART
- Moves all HIV attributes, parameters, and results into hivsim class instance
- Merges HIV results with sim.results at conclusion of simulation
- Adds HIV pars as an argument to calibration as well as HIV-specific results to age-results analyzer
- Allows for flexible severity growth functions
- *Github info* PR `542 <https://github.com/amath-idm/hpvsim/pull/542>`__

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- Moves all HIV functionality into hiv.py
- Establishes new class HIVsim, which is defined by a set of parameters and methods for updating a people object
- Bug fix for setting people.sev wrong on day of infection
- *Github info* PR `526 <https://github.com/amath-idm/hpvsim/pull/526>`__