Polylogarithm 3.2

New: Implementation of the complex polylogarithm for arbitrary n
New: Implementation of the standard Clausen function for arbitrary n

Polylogarithm 3.1

Fixed: Implemented series expansion around z = 1 to improve convergence.

Polylogarithm 3.0

Split the implementations among separate files.

Polylogarithm 2.0

New:

• polylogarithms with n = 0,1,3,4,5,6
• Clausen function with n = 2
• unit tests against Mathematica and GSL