- Introduces the Lynx testnet, a more stable environment to learn how to use NuCypher and integrate it into other apps. (`#2537 <https://github.com/nucypher/nucypher/issues/2537>`__)
- Ensure minimum number of available peers for fleet-sourced IP determination and better handling of default teacher unavailability scenarios on startup (`#2527 <https://github.com/nucypher/nucypher/issues/2527>`__)
- Compare Ursula IP address with configuration values on startup to help ensure node availability. (`#2462 <https://github.com/nucypher/nucypher/issues/2462>`__)
- Arrangement proposals and policy enactment are performed in parallel, with more nodes being considered as some of the requests fail. This improves granting reliability. (`#2482 <https://github.com/nucypher/nucypher/issues/2482>`__)
Bugfixes
~~~~~~~~
- More logging added for arrangement proposal failures, and more suitable exceptions thrown. (`#2479 <https://github.com/nucypher/nucypher/issues/2479>`__)
- Ignore pending Ethereum transactions for purposes of gas estimation. (`#2486 <https://github.com/nucypher/nucypher/issues/2486>`__)
- Fix rtd build after #2477 (`#2489 <https://github.com/nucypher/nucypher/issues/2489>`__)
- Fix rtd build after #2477 and #2489 (`#2492 <https://github.com/nucypher/nucypher/issues/2492>`__)
- cloudworkers bugfixes, cli args refactor and new "cloudworkers stop" feature. (`#2494 <https://github.com/nucypher/nucypher/issues/2494>`__)
- Gentler handling of unsigned stamps from stranger Ursulas on status endpoint (`#2515 <https://github.com/nucypher/nucypher/issues/2515>`__)
- Restore the re-raising behavior in ``BlockchainInterface._handle_failed_transaction()`` (`#2521 <https://github.com/nucypher/nucypher/issues/2521>`__)
Improved Documentation
~~~~~~~~~~~~~~~~~~~~~~
- Auto docs generation for smart contracts (`#2477 <https://github.com/nucypher/nucypher/issues/2477>`__)
- Add pricing protocol & economics paper to main repo readme and docs homepage. (`#2520 <https://github.com/nucypher/nucypher/issues/2520>`__)
- Ensure that documentation dependencies are updated when standard/development dependencies are updated. (`#2510 <https://github.com/nucypher/nucypher/issues/2510>`__)
- Introduces "Character Cards" a serializable identity abstraction and 'nucypher contacts' CLI to support. (`#2115 <https://github.com/nucypher/nucypher/issues/2115>`__)
- - nucypher cloudworkers now contains a complete and comprehensive set of features for easily managing, backing up and restoring one to many workers (`#2365 <https://github.com/nucypher/nucypher/issues/2365>`__)
- New composite gas strategy that uses the median from three different gas price oracles
(currently, Etherchain, Upvest and gas-oracle.zoltu.io),
which behaves more robustly against sporadic errors in the oracles (e.g., spikes, stuck feeds). (`#2420 <https://github.com/nucypher/nucypher/issues/2420>`__)
- Improve gas strategy selection: Infura users now can choose between ``slow``, ``medium`` and ``fast``, and a maximum gas price can be configured with --max-gas-price. (`#2445 <https://github.com/nucypher/nucypher/issues/2445>`__)
Bugfixes
~~~~~~~~
- Slowly try more and more nodes if some of the initial draft for a policy were inaccessible. (`#2416 <https://github.com/nucypher/nucypher/issues/2416>`__)
- Fix bad cli handling in several cloudworkers commands, improved envvar handling. (`#2475 <https://github.com/nucypher/nucypher/issues/2475>`__)
- Introduces shorthand options for --bob-verifying-key (-bvk), --bob-encrypting-key (-bek) and alice verifying key (-avk) for CLI commands. (`#2459 <https://github.com/nucypher/nucypher/issues/2459>`__)
- Complete interactive collection of policy parameters via alice grant CLI. (`#2460 <https://github.com/nucypher/nucypher/issues/2460>`__)
Bugfixes
~~~~~~~~
- Corrected minimum stake value for --min-stake CLI option (`#2371 <https://github.com/nucypher/nucypher/issues/2371>`__)
Misc
~~~~
- Introduces a probationary period for policy creation in the network, until 2021-02-28 23:59:59 UTC. (`#2431 <https://github.com/nucypher/nucypher/issues/2431>`__)
- Supplies `AccessDenied` exception class for better incorrect password handling. (`#2451 <https://github.com/nucypher/nucypher/issues/2451>`__)
- Improve user experience when removing unused substakes (CLI and docs). (`#2450 <https://github.com/nucypher/nucypher/issues/2450>`__)
Bugfixes
~~~~~~~~
- Fix bug in deployer logic while transferring ownership of StakingInterfaceRouter (`#2369 <https://github.com/nucypher/nucypher/issues/2369>`__)
- Allow arbitrary decimal precision when entering NU amounts to nucypher CLI. (`#2441 <https://github.com/nucypher/nucypher/issues/2441>`__)
Improved Documentation
~~~~~~~~~~~~~~~~~~~~~~
- Document usage of hardware wallets for signing. (`#2346 <https://github.com/nucypher/nucypher/issues/2346>`__)
- Improvements to the staking guide: extending description of winddown command, other minor corrections. (`#2434 <https://github.com/nucypher/nucypher/issues/2434>`__)
- Added support for a user-provided gas price to the ``nucypher stake`` command, using ``--gas-price GWEI``. (`#2425 <https://github.com/nucypher/nucypher/issues/2425>`__)
Bugfixes
~~~~~~~~
- Correct CLI problems when setting the min fee rate. Also, simplifies usage by expressing rates in GWEI. (`#2390 <https://github.com/nucypher/nucypher/issues/2390>`__)
- Tone-down learning logging messages even more (see issue #1712). Fixes some CLI and exception messages. (`#2395 <https://github.com/nucypher/nucypher/issues/2395>`__)
- Fixes logical bug in ``WorkTracker`` to ensure commitment transactions can only be issued once per period. (`#2406 <https://github.com/nucypher/nucypher/issues/2406>`__)
- Removes leftover imports of Twisted Logger, using instead our shim (Closes #2404). Also, changes NuCypher Logger behavior to always escape curly braces. (`#2412 <https://github.com/nucypher/nucypher/issues/2412>`__)
- Now ``BlockchainInterface.gas_strategy`` always has a value; previously it was possible to pass ``None`` via the constructor (e.g. if the config file had an explicit ``"null"`` value). (`#2421 <https://github.com/nucypher/nucypher/issues/2421>`__)
- Take advantage of the changes in PR#2410 by retrying worker commitments on failure (`#2422 <https://github.com/nucypher/nucypher/issues/2422>`__)
- Domain "leakage", or nodes saving metadata about nodes from other domains (but never being able to verify them) was still possible because domain-checking only occurred in the high-level APIs (and not, for example, when checking metadata POSTed to the node_metadata_exchange endpoint). This fixes that (fixes #2417).
Additionally, domains are no longer separated into "serving" or "learning". Each Learner instance now has exactly one domain, and it is called domain. (`#2423 <https://github.com/nucypher/nucypher/issues/2423>`__)
Misc
~~~~
- Updates contract registry after upgrade of StakingEscrow to v5.5.1, at behest of the DAO (proposal #0). (`#2402 <https://github.com/nucypher/nucypher/issues/2402>`__)
- Add CLI functionality for the removal of unused (inactive) sub-stakes. Depending on the staker's sub-stake configuration, this command can reduce the associated worker's gas costs when making commitments. (`#2384 <https://github.com/nucypher/nucypher/issues/2384>`__)
- Update Ursula network grant availability script for mainnet usage. (`#2383 <https://github.com/nucypher/nucypher/issues/2383>`__)
- GitHub Action to ensure that each pull request into main makes an associated release note entry. (`#2396 <https://github.com/nucypher/nucypher/issues/2396>`__)
- Temporary workaround for lack of single attribute for the value of "domain" in sprouts and mature nodes. (`#2356 <https://github.com/nucypher/nucypher/issues/2356>`__)
- Show the correct fleet state on Ursula status page. (`#2368 <https://github.com/nucypher/nucypher/issues/2368>`__)
- Reduce the greediness of prometheus metrics collection. (`#2376 <https://github.com/nucypher/nucypher/issues/2376>`__)
- Ensure minimum NU stake is allowed instead of stake creation failing for not enough tokens. (`#2377 <https://github.com/nucypher/nucypher/issues/2377>`__)
- Fixes to status page based on reworked design done in PR #2351. (`#2378 <https://github.com/nucypher/nucypher/issues/2378>`__)
- Track pending Ursula commitment transactions due to slower gas strategies. (`#2389 <https://github.com/nucypher/nucypher/issues/2389>`__)
