add class APIs

0.0.4

add class APIs; tag 0.0.4

fix for relfect function

0.0.3

fix for relfect function; tag 0.0.3

some more list conversion

0.0.2

some more list conversion; tag 0.0.2

refactor for basic math #2

0.0.1

try rotor; tag 0.0.1