Exemptions from liens against tenant, §44-7-17. Defect of title. Effect on obligation, §44-7-15. Destruction of tenement. Effect on obligation, §44-7-15. Failure to pay. Dispossessory proceedings generally, §§44-7-49 to 44-7-59. When implied contract to pay arises, §44-7-5. Regulation by local governments.