dio_http2_adapter 2.0.0-prev1

A Dio HttpClientAdapter which support Http/2.0(Support connection reuse, header compression, server pushing is not supported yet.)

[2.0.0-prev1]

• support dio 4.0.0-prev1

[2.0.0-beta2]

• support null-safety
• support dio 4.x

[1.0.1] - 2020.8.7

• merge #760

[1.0.0] - 2019.9.18

• Support redirect

[0.0.2] - 2019.9.17

• A Dio HttpAdapter which support Http/2.0.