il.cbs.muni 0.1.0

• Initial CRAN submission
• Functions for reading and processing Israeli Central Bureau of Statistics municipal data
• Core utilities:
  • pad_yishuv_id(): Pad yishuv (settlement) IDs to standard 4-character format
  • clean_name(): Clean and standardize municipality names
  • modify_muni_id(): Modify municipal IDs based on yishuv IDs
  • combine_cbs_muni(): Combine municipal data from multiple years
  • read_cbs_muni(): Read CBS municipal data files
  • read_cbs_yishuv(): Read CBS yishuv data files
  • read_cbs_index(): Read CBS index files
  • read_muni_id(): Read municipal ID mapping data
  • row_to_names_fill(): Convert row to column names with filling
• Comprehensive input validation with informative error messages
• Full test coverage with 126+ tests