Initial commit
[ADD] Sharemind's operations in Python

- Secret Sharing
- Resharing
- Sum
[Update] Multiplication to Sharemind's functions
[Update] added wrong version of equality to functions
[Update] added reshareToTwo
[Update] Alternative multiplication + bitextr attempt
[Bug Fix] bug in sum operation
[Feature] Added shareConv from Z2 to Z2^32
[Unstable] hypothetical version of bitConj
[Update] Files refactoring
Update README.md
[Feature] Added equality and bitconj
[Update] ShareConv seems OK
[Unstable] prefixOR function
[Feature] Added MSNZB --> prefixOR dependent
[Feature] Added bitwise mult&reshare
[Update] Corrections to the equality operation
[Feature] Added oblivious database filtering by equality
[Feature] Overflow seems legit
[Incomplete] greaterThan partially working