Move changelog to separate file

Thankfully new hackage do handle changelogs
Add information to changelog for future release
Express event/odd polynomials via evaluatePolynomial
Update benchmarks

Unrolling of of list coefficients doesn't seem to work
Add visualization of benchmarks results
Express polynomials evaluation using foldr1

Old version had gratious multiplication. For example following
would be genrated for ax^3 + bx^62 +  cx + d assuming that everything
is inlined:

d + (c + (b + (a + 0*x)*x))*x

New version avoid multiplication by 0. Check for null vector
does not brack fusion.

For some reason performance is improved all cases. Even if vector is
large and not inlined.
Add bug reports section to cabal file