update and fix examples #120
Merged
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An earlier commit which updated various dependencies (most notably, Wasmtime) unmasked a bug in
add_wasi_and_stubs
such that we were overwriting the host functions added bywasmtime-wasi
with trapping stubs. This wasn't a problem previously because there was only one version of WASIp2: 0.2.0. Now that we have 0.2.1, 0.2.2, etc., with corresponding support in Wasmtime, we need to be a bit more careful.