usql/Readme.md

TODO

• save table command
• unify using of float and double keywords to double
• use long data type for int
• stoi -> stol, stof -> stod
• add exceptions
• class members should have prefix m_
• add pipe | token
• add to_date a to_number functions
• add min and max functions, eg aggregate functions
• add logging
• add const wherever should be