Fixed indentation in integrator, #794
Added new integrator base class, #794
Fix pickling of empty matrices
Fixing mistakenly de-activated unittests
Concerning #791: adding matrix.null() to check if shape is 0-by-0

Note that .empty() checks if any of the dimenions is zero
Concerning 791: product of empty matrices should be sparse
Concerning 791: binary operation with 0-by-0 is a no-op
Concerning 791: XFunction.call should retain the output dimensions, even if one of those dimensions is zero
and -> &&
Fixing trunk: adding an empty string to a casadi expression is an error
Update typemaphelpers.i
automatic documentation update
automatic casadibot merge