empty constructor needed for direct push
(cherry picked from commit 829a694254755bf0dcce879976a1a8dcec0c3c82)
adding support for pushing multiple stream element in a single request
(cherry picked from commit b08762a550ba41681caab1eff304cd5d9d1555b1)
fix set timestamp on a SE with timestamp 0
adding support for FLOAT/REAL
updating postgresql library
(cherry picked from commit bf4e52a66df407170790a5b367f9944c009d9bfa)
cleaning page header