v5.1.0

New features:

• Export HugeInt's abs and neg and HugeNum's subHugeNum, both implemented by @Thimoteus (#25 by @JordanMartinez)

Other improvements:

• Fix warnings revealed by v0.14.1 PS release, including the removal of fromKRep function (#25 by @JordanMartinez)
• Install missing dependencies used in source code (#25 by @JordanMartinez)