V1.0.2 Release Update (homenc#366)

* V1.0.2 Release Update

- Source code contribution policy
- HElib now builds with compiler pedantic flags
- Consistent C++ format style adopted
- Improved sampling functions
- Bug fixes

Co-Authored-By: Hamish Hunt <[email protected]>
Co-Authored-By: Jack L Crawford <[email protected]>
Co-Authored-By: Enrico Steffinlongo <[email protected]>
Co-Authored-By: Victor J. Shoup <[email protected]>

V1.0.1 Release Update

V1.0.1 Release Update

Update to changes.md

Merge pull request homenc#330 from faberga/master

Release 1.0.0-beta2-Nov2019

Second beta before 1.0.0

A beta before release 1.0.0