Added code to bound isogenies to the GaloisRepresentation class
(for elliptic curves over number fields).
Revert "Updated Sage version to 6.3"

This reverts commit 00199fb220aa173d8585b9e90654dafd3247d82d.
Revert "Revert "Updated Sage version to 6.3""

This reverts commit ea410d47cdf63f26bf4b7dacf255b90b3f9d13d5.
comitting because git wants me to?
sorted out now?
forgot to import Set
Merge remote-tracking branch 'trac/u/elarson3/isogeny_bounds_for_elliptic_curves_over_number_fields' into larson
#16806: reviewer's patch
Use mpn functions for bitsets
Cast size to <int> when comparing
Use pari_ffelt for residue fields
Update the benzene package for the sage-git directory layout
More lenient doctest for non-deterministic gaussian sampler code

If precision='dp' is used to sample from a discrete Gaussian the result
is not deterministic as Sage does not control the relevant PRNG. This
fixes a non-deterministic doctest failure where acceptable behaviour (a
discrete Gaussian sampler with width 1.0 around 2.5 returning 7) was
rejected by a doctest.
Better doctests of discrete Gaussians

- adapt the lower bound to reflect probabilities of it being hit
- add a doctest marked as random which shows the shape of the result
Update to gdb 7.8
Merge branch 'develop' into larson
trac #16994: Subsets with hereditary property
trac #16994: cleaner input for SimplicialComplex
#16806: minor changes after review
trac 16806: include in documentation