Removed the notion of "single stream read and write"
for the notion of "single async operation"
UNIX socket examples no longer use SSL.
Added Doxygen reference template and applied it
to all functions and classes.
Improved the overview section.
Misc corrections in discussion.
Added missing members to quickref.
Fixed usage instructions.
Fixed issue in rows that caused an unnecessary copy of the strings.
Added upgrade instructions from 0.2.x.
Added SQL injection warnings in connection::query docs.
Fixed problems with missing icons.
Close#66Close#96Close#78Close#47
