Rename the coins folder to networks (#583)

* Rename the coins folder to networks

Ethereum isn't a coin. It's a network.

Resolves #357.

* More renames of coins -> networks in orchestration

* Correct paths in tests/

* cargo fmt

networks/monero/src/lib.rs

@@ -0,0 +1,39 @@
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![doc = include_str!("../README.md")]
+#![deny(missing_docs)]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+pub use monero_io as io;
+pub use monero_generators as generators;
+pub use monero_primitives as primitives;
+
+mod merkle;
+
+/// Ring Signature structs and functionality.
+pub mod ring_signatures;
+
+/// RingCT structs and functionality.
+pub mod ringct;
+
+/// Transaction structs and functionality.
+pub mod transaction;
+/// Block structs and functionality.
+pub mod block;
+
+#[cfg(test)]
+mod tests;
+
+/// The minimum amount of blocks an output is locked for.
+///
+/// If Monero suffered a re-organization, any transactions which selected decoys belonging to
+/// recent blocks would become invalidated. Accordingly, transactions must use decoys which are
+/// presumed to not be invalidated in the future. If wallets only selected n-block-old outputs as
+/// decoys, then any ring member within the past n blocks would have to be the real spend.
+/// Preventing this at the consensus layer ensures privacy and integrity.
+pub const DEFAULT_LOCK_WINDOW: usize = 10;
+
+/// The minimum amount of blocks a coinbase output is locked for.
+pub const COINBASE_LOCK_WINDOW: usize = 60;
+
+/// Monero's block time target, in seconds.
+pub const BLOCK_TIME: usize = 120;