bump version to 0.2.0

[arvidn]

No description provided.

[ChiaMineJP]

Umm.
I've tried to build wasm but the wasm file created was only 256 bytes.
I checked wasm/src/lib.rs and found that the content was:

use wasm_bindgen::prelude::*;

#[wasm_bindgen]
pub fn a_test_function() -> u64 {
    500
}

So wasm code is not ready yet.
Do you think it blocks 0.2.0 release?

[arvidn]

Missing wasm bindings is not a blocker for chia-blockchain 1.7.

I seem to recall you adding some bindings though, but perhaps that was for clvm_rs

[ChiaMineJP]

Yes, I implemented wasm bindings for clvm_rs but not yet for chia_rs.
I agree that empty wasm doesn't block releasing.
I'll approve this PR with our conversation left here.