29cb34eed7 Refactor Address struct and its methods (Harshil Jani)
Pull request description:
Closes#1755
In this PR the `as_unchecked` is added to the Address struct, which returns a reference to the same address but with the type Address<NetworkUnchecked>. Similarly, the `assume_checked_ref` is added to Address<NetworkUnchecked>, which returns a reference to the same address but with the type Address.
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Tree-SHA512: 75ba40883d9fb31026b0e94e8d3fdcf808ff38a4d10f61f99a1e14ddc48358da86bad44cd78563dc67aa5d39382a5493e73c03891317f361f590e39b6257cb84
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