Bind All Existing `Virus` Functions

[IsaccBarker]

These consist of the following:

• [x] get_sequence
• [x] set_sequence
• [x] set_date
• [x] get_date
• [x] get_id
• [x] get_prob_infecting
• [x] get_prob_recovery
• [x] get_prob_death
• [x] get_incubation
• [x] post_recovery
• [x] set_post_recovery
• [x] set_post_immunity
• [x] set_prob_infecting_fun
• [x] set_prob_recovery_fun
• [x] set_prob_death_fun
• [x] set_incubation_fun
• [x] set_prob_infecting
• [x] set_prob_recovery
• [x] set_prob_death
• [x] set_incubation
• [x] set_name
• [x] get_name
• [x] set_state
• [x] set_queue
• [x] get_state
• [x] get_queue
• [x] print
• [x] distribute
• [x] set_distribution

[IsaccBarker]

I tried assigning this to a milestone but it keeps not saving; I'll try again tomorrow assuming this is an error with GitHub.

@IsaccBarker

[IsaccBarker]

See in milo-fix-52, will open a PR soon.