Code polish and minor change to rich output (#39)

Merge branch 'next'

bump version to v1.0

Merge pull request #27 from evalf/version

bump version to v1.0b7

Merge pull request #22 from evalf/version

bump version to v1.0b6

bump version to 1.0b5

bump version to 1.0b4

bump version to 1.0b3

bump version to 1.0b2

bump version to 1.0b1