update: RELEASE.md
-# Release Note (version 0.2)
+# Release Note (version 0.2.1)
## Developer Note
-Good luck! If it explode, increase nu. :rofl: If it doesn't explode, thoroughly check for the bug.
+Contact model between two different rods and rod with itself is implemented.
+Testing the contact model is done through simulations. These simulation scripts can be found under
+[RodContactCase](./RodContactCase).
+However, in future releases we have to add unit tests for contact model functions to test them and increase code coverage.
## Notable Changes
-- #84: Block implementation
-- #75: Poisson ratio and definition of modulus [PR #26 in public](https://github.com/GazzolaLab/PyElastica/pull/26)
-- #95: MuscularFlagella example case is added
-- #100: ExportCallBack is added to export the rod-data into file.
-- #109: Numpy-only version is now removed. Numba-implementation is set to default.
-- #112: Save and load implementation with the example are added.
+- #31: Merge contact model to master [PR #40 in public](https://github.com/GazzolaLab/PyElastica/pull/40)
### Release Note
<details>
<summary>Click to expand</summary>
-- Block structure is included as part of optimization strategy.
-- Different Poisson ratio is supported.
-- Contributing guideline is added.
-- Update readme
-- Add MuscularFlagella example case
-- Minimum requirement for dependencies is specified.
-- Shear coefficient is corrected.
-- Connection index assertion fixed.
-- Remove numpy-only version.
-- Save/Load example
+- Rod-Rod contact and Rod self contact is added.
+- Two example cases for rod-rod contact is added, i.e. two rods colliding to each other in space.
+- Two example cases for rod self contact is added, i.e. plectonemes and solenoids.
</details>
