Adds From<H160> trait to ValueOrArray<H160> (#1200)

* Adds From<H160> trait to ValueOrArray<H160>

The trait From<H160> for ValueOrArray<H160> was not implemented which
prevented compilation when using
pub fn address<T: Into<ValueOrArray<Address>>>(self, address: T)
for ethers_core::types::Filter.

Fixes: #1199

* update CHANGELOG.md

* Adds From<Vec<H160>> trait to ValueOrArray<H160> and documentation

The trait From<Vec<H160>> for ValueOrArray<H160> was not implemented which
prevented compilation when passing a Vec<H160> into
pub fn address<T: Into<ValueOrArray<Address>>>(self, address: T)
for ethers_core::types::Filter.

This commit also includes documentation on how to use fn address for
ethers_core::types::Filter.

Fixes: #1199

CHANGELOG.md

@@ -62,6 +62,7 @@
   [#996](https://github.com/gakonst/ethers-rs/pull/996)
 - Add `TransactionReceipt::to` and `TransactionReceipt::from`
   [#1184](https://github.com/gakonst/ethers-rs/pull/1184)
+- Add `From<H160>` and From<Vec<H160>> traits to `ValueOrArray<H160>` [#1199](https://github.com/gakonst/ethers-rs/pull/1200)
 
 ## ethers-contract-abigen
 

ethers-core/src/types/log.rs

@@ -1,6 +1,6 @@
 // Adapted from https://github.com/tomusdrw/rust-web3/blob/master/src/types/log.rs
 use crate::{
-    types::{Address, BlockNumber, Bytes, H256, U256, U64},
+    types::{Address, BlockNumber, Bytes, H160, H256, U256, U64},
     utils::keccak256,
 };
 use serde::{
@@ -306,7 +306,31 @@ impl Filter {
         self.block_option = self.block_option.set_hash(hash.into());
         self
     }
-
+    /// Sets the inner filter object
+    ///
+    /// *NOTE:* ranges are always inclusive
+    ///
+    /// # Examples
+    ///
+    /// Match only a specific address `("0xAc4b3DacB91461209Ae9d41EC517c2B9Cb1B7DAF")`
+    ///
+    /// ```rust
+    /// # use ethers_core::types::{Filter, Address};
+    /// # fn main() {
+    /// let filter = Filter::new().address("0xAc4b3DacB91461209Ae9d41EC517c2B9Cb1B7DAF".parse::<Address>().unwrap());
+    /// # }
+    /// ```
+    ///
+    /// Match all addresses in array `(vec!["0xAc4b3DacB91461209Ae9d41EC517c2B9Cb1B7DAF",
+    /// "0x8ad599c3A0ff1De082011EFDDc58f1908eb6e6D8"])`
+    ///
+    /// ```rust
+    /// # use ethers_core::types::{Filter, Address, ValueOrArray};
+    /// # fn main() {
+    /// let addresses = vec!["0xAc4b3DacB91461209Ae9d41EC517c2B9Cb1B7DAF".parse::<Address>().unwrap(),"0x8ad599c3A0ff1De082011EFDDc58f1908eb6e6D8".parse::<Address>().unwrap()];
+    /// let filter = Filter::new().address(addresses);
+    /// # }
+    /// ```
     #[must_use]
     pub fn address<T: Into<ValueOrArray<Address>>>(mut self, address: T) -> Self {
         self.address = Some(address.into());
@@ -360,6 +384,18 @@ pub enum ValueOrArray<T> {
 
 // TODO: Implement more common types - or adjust this to work with all Tokenizable items
 
+impl From<H160> for ValueOrArray<H160> {
+    fn from(src: H160) -> Self {
+        ValueOrArray::Value(src)
+    }
+}
+
+impl From<Vec<H160>> for ValueOrArray<H160> {
+    fn from(src: Vec<H160>) -> Self {
+        ValueOrArray::Array(src)
+    }
+}
+
 impl From<H256> for ValueOrArray<H256> {
     fn from(src: H256) -> Self {
         ValueOrArray::Value(src)