Release 0.9.1

make-point and make-quaternion now automatically convert arguments to flonums

Fix a (serious) typo in make-quaternion

https url in release-info

Remove CHICKEN 4 stuff, update legal and documentation

Include hypermath C library so that static linking works

Preliminary port to CHICKEN 5

Increment release number

Allow pointer arguments to be passed as locatives

Increment release version

Fix result vector size for points and quaternions

Fix typo

Increment minor version

Document

Update to Hypermath 0.8.0