Logos.check_the_parameters() : better error message
Logos.inflect_from_logotheras_entry() : new parameter 'formatstring''
Logos.inflect_from_logotheras_entry() : <gender> follows what's required by <Logos.parameters_definition>
fixed a bug in Logos.inflect_from_logotheras_entry() (removing a pending comma)
improved message error in Logos.inflect_from_logotheras_entry()
Logos.flector() : fixed the way the suffix -os was removed from the radical