remove DbSimple from requested packages
many changes
work in new code
mani good changes
merge it
main functions work
add local array cache
add field validators
fix small errors
add method to get meta info for field
add abstract class for entity and variable entity (for dinamic fields)
many changes for use with related tables
add getId method for entity interface
add order by to select|find
add raw (no escaped) parameters to query
work with fields with _ delimiter
add between condition to where part
add MysqlPdo adapter