version 2.1

s

Bump version: 1.7 → 2.0

Bump version: 1.6 → 1.7

Bump version: 1.5 → 1.6

Bump version: 1.4 → 1.5

Bump version: 1.3 → 1.4

Bump version: 1.2 → 1.3

Bump version: 1.1 → 1.2

Bump version: 1.0 → 1.1

Bump version: 0.1 → 1.0