1.1.0

Changes:

• up composer php version to 7.1

Added:

• Table::pickRecord method allows to get record by index without moving file pointer.
• Enum classes with const for TableType, FieldType, etc.
• Record::getDateTimeObject return php \DateTime object for D type columns.

Fixed issues:

#35 Record:getNum not returns false if value is '0' (zero char)
#75 Some columns cannot be read
#78 Can’t insert dates in DBF