Create issues for all TODOs/FIXMEs (#224)

* network and validation

* remainder of todos

* ref new issue

* change issue number

polkadot/primitives/src/lib.rs

@@ -59,7 +59,7 @@ use primitives::bytes;
 
 /// An index to a block.
 /// 32-bits will allow for 136 years of blocks assuming 1 block per second.
-/// TODO: switch to u32
+/// TODO: switch to u32 (https://github.com/paritytech/polkadot/issues/221)
 pub type BlockNumber = u64;
 
 /// Alias to 512-bit hash when used in the context of a signature on the relay chain.

polkadot/primitives/src/parachain.rs

@@ -152,6 +152,7 @@ impl PartialOrd for CandidateReceipt {
 impl Ord for CandidateReceipt {
 	fn cmp(&self, other: &Self) -> Ordering {
 		// TODO: compare signatures or something more sane
+		// https://github.com/paritytech/polkadot/issues/222
 		self.parachain_index.cmp(&other.parachain_index)
 			.then_with(|| self.head_data.cmp(&other.head_data))
 	}