remove dbg! annotation

implement using feature on EXEC

Fix another memory leak

Fix memory leak in the new implementation

Release, honor timeout also on serverside

tag rc05

Change layout of replies from Vec<Vec<Entity>> to Vec<Entity>

The change should improve the general performance while reading long
replies, indeed, in the previous model we allocate a new Vec<Entity> for
each row, the new design get away with many less allocations, moreover
there are less pointer indirections.

rc4, clean release on Travis!

add travis build on release

1.0.3-rc02