HF2 Slate Changes (#258)

* Update slate version to V3, define PaymentInfoV3 and add needed serialization

* rustfmt

* add ttl and payment proof info to slate

* rustfmt

* add documentation for updated fields

* doc test fixes

controller/src/command.rs

@@ -736,15 +736,15 @@ pub struct PostArgs {
 	pub fluff: bool,
 }
 
-pub fn post<'a, L, C, K>(
-	wallet: Arc<Mutex<Box<dyn WalletInst<'a, L, C, K>>>>,
+pub fn post<L, C, K>(
+	wallet: Arc<Mutex<Box<dyn WalletInst<'static, L, C, K>>>>,
 	keychain_mask: Option<&SecretKey>,
 	args: PostArgs,
 ) -> Result<(), Error>
 where
-	L: WalletLCProvider<'a, C, K>,
-	C: NodeClient + 'a,
-	K: keychain::Keychain + 'a,
+	L: WalletLCProvider<'static, C, K> + 'static,
+	C: NodeClient + 'static,
+	K: keychain::Keychain + 'static,
 {
 	let slate = PathToSlate((&args.input).into()).get_tx()?;