rearranged algorithm for calculating planar surface coordinates generated by PointSource to avoid distosions due to errors accumulation
Merge pull request #125 from monellid/planar_ruptures_tolerance

refactor algorithm for calculating planar surface coordinates
packager.sh: read-write access to git remote is now managed
update oq-hazardlib version to 0.11.0
Preliminary work to make source objects pickleable
Added __setstate__ method
Replaced slots with __slots__
Renamed can_pickle -> assert_pickleable
geo/surface/simple_fault:

Better assertion error messages for checking mesh dimensions.
packager.sh: enhanced to support simultaneous multiple remotes retrieving the right value from the current branch
packager.sh: more general approach to retrieve git repository
Fixed two docstrings
Merge pull request #126 from gem/pickeable-sources

Pickeable sources
Merge pull request #127 from larsbutler/simple-fault-surface-better-error-msg

Simple fault surface: better error messages for checking mesh dimensions

[r=micheles] [f=1177393]
First implementation of the MSR used in the CEUS SSC project. One test not passing
CEUS2011 msr
addresses cosmetic issues raise during the pull request review
Updated documentation
Merge pull request #128 from mmpagani/master

CEUS 2011 magnitude scaling relationship

[r=larsbutler]
implemented ground_motion_field_with_residuals