Paked upgrade; PCL 259 in addition to 47 and 328, in F# 259 replacing 328 in addition to 47
Build: make travis use Mono 3.10.0 instead of 3.2.5
Paket upgrade
Build: travis should run on Linux instead of OSX
Build: add PCL profiles 7 and 78, for F# only drop profile 259
Release v3.3.0-beta2
Update readme, contributors, docs index
Build: restore F# portable profiles (disabled)