Merge branch 'Y-linked-sex-selection' into 'pregmod-master'

src/data/backwardsCompatibility/backwardsCompatibility.js

src/data/backwardsCompatibility/updateSlaveObject.js

src/facilities/nursery/widgets/children/ChildState.js

src/facilities/nursery/widgets/infants/InfantState.js

src/gui/options/options.tw

src/js/SlaveState.js

src/npc/descriptions/descriptionWidgets.js

src/npc/generate/generateGenetics.js

src/npc/generate/generateNewSlaveJS.js

src/player/js/PlayerState.js

src/pregmod/managePersonalAffairs.tw