v1.5.0

Added

• FormHelper: dateRange control type — Bootstrap input group with two date fields ({name}_from / {name}_to by default)
• FormHelper: dateRange() method for input-group markup only; control(['type' => 'dateRange']) adds label and form-group wrapper
• FormHelper: suffixes option for custom field suffixes (e.g. ['start', 'end'] → {name}_start, {name}_end)
• Tests and documentation for the date range control (docs/HELPERS.md)