fbthrift 1.0.0+3

Thrift for Dart, forkde from Apache Thrift and translated from fbthrift java version.

1.0.0+3

• fix: oneway supports

1.0.0+2

• fix bugs
• feat: adding maxLength specification
• enhance: when socket is nested in a frame, parse the length of the frame first.

1.0.0+1

• add more docs

1.0.0

• Initial version.