fix hang when parsing egregiously long integer (pydantic#77)

uprev to 0.2.0 (pydantic#76)

uprev (pydantic#70)

bump version to 0.1.0 (pydantic#69)

bump version to 0.0.7 (pydantic#67)

uprev to v0.0.6

back to 0.0.5

remove Cargo.lock

zero as int not float (pydantic#31)

Support borrowed strings in `JsonValue` (pydantic#17)