Hpvsim

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- Fixes age of migration
- Adds scale parameter for vital dynamics
- *GitHub info*: PR `423 <https://github.com/amath-idm/hpvsim/pull/423>`__

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- Adds merge method for scenarios and fixes printing bugs
- *GitHub info*: PR `422 <https://github.com/amath-idm/hpvsim/pull/422>`__

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- Simplifies genotype initialization, adds checks for HIV runs.
- Since the last release, changes were also made to virological clearance rates for people receiving treatment - previously all treated people would clear infection, but now some may control latently instead.
- *GitHub info*: PRs `421 <https://github.com/amath-idm/hpvsim/pull/421>`__ and `420 <https://github.com/amath-idm/hpvsim/pull/420>`__

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- Store treatment properties as part of sim.people
- *GitHub info*: PR `413 <https://github.com/amath-idm/hpvsim/pull/413>`__

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- Fix to ensure consistent results for the number of txvx doses
- *GitHub info*: PR `411 <https://github.com/amath-idm/hpvsim/pull/411>`__

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- Fix bug related to screening eligibility. NB, this has a sizeable impact on results - screening strategies will be much more effective after this fix.
- *GitHub info*: PR `396 <https://github.com/amath-idm/hpvsim/pull/396>`__