tools (common/date_utils) handle timestamp and `in` + `delta2human`: regex used to parse datetimes has been improved to handle a unix time (which can be used with `+ <delta>` or `- <delta>`), and the `in <delta>` (e.g. `in 6 days`). `DEFAULT_DATETIME` has been removed as dateutil use current date by default, which is the expected behaviour. Add `delta2human` method which convert the difference of 2 unix times to a human friendly approximate text. rel 372

include MANIFEST.in sat/VERSION
global-include *.py
global-include *.ini
global-include *.po *.mo
global-include CHANGELOG COPYING* INSTALL README*
global-include *.sh
global-include *.yml *.yaml
global-include Makefile *.rst *.bat
graft misc
graft doc
include sat_frontends/jp/jp sat_frontends/primitivus/primitivus
include sat/bridge/bridge_constructor
global-exclude *.un~
prune sat/bridge/bridge_constructor/generated