Chapter 5: Referencing bitcoinjs & libbitcoin as "framework" instead of "library"

[zackypick]

I believe that in Chapter 5 the book references bitcoinjs and libbitcoin as frameworks instead of libraries.

As far as I know, a library's code is called from my code whereas with a framework, my code is being called from the framework (i.e. inversion of control).

So perhaps it might be more technically correct to describe bitcoinjs and libbitcoin as libraries instead of frameworks.

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bitcoinjs/bip39
An implementation of BIP-39, as part of the popular bitcoinJS framework, in JavaScript

libbitcoin/mnemonic
An implementation of BIP-39, as part of the popular Libbitcoin framework, in C++