Rationale for ~0.0.0 being equal to >=0.0.0?

[michaellee1019]

I noticed that this library treats the ~0.0.0 constraint as equal to >=0.0.0 (all versions are valid against the constraint) and was implemented in 429e95e. Before seeing this I was thinking that 0.1.0 and greater would fail the constraint against ~0.0.0. I couldn't find any rationale for this decision and wondering if any additional context could be provided.