add SPCPPL_ASSERT
add binary power
Added prime check
Add modular arithmetic
Added gcd
Add functions that accept ranges as single argument
fix hard normalization to work with negatives
Add operator - for Zn
Add zero(sample) function.
Add matrix class
Add few prime-checking functions
add DSU
Add rationals
pass by value + move in operator + and -
Rational comparation operators
add fenwick tree
add fenwick tree with maximum
Two prime modules hasher
added sorted() and reversed()
Add reversed hash