It is the intent of the Town that these regulations, which include this chapter and the District Zoning Map, have been established for the purpose of promoting sound and desirable development and for maintaining land use patterns. In harmony with this purpose, this chapter and the map shall not be amended except to correct an obvious error or oversight in the regulations, or to recognize changing conditions in the Town which require that amendments be adopted for the promotion of the public health, safety and general welfare. In conformity with this statement of policy, the Town Council may initiate amendments, or any person, firm or corporation may initiate amendments in the manner set forth in this chapter.