diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5dbf32b..9479cc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,66 @@
+# 1.0.0 (2026-03-18)
+
+
+### Bug Fixes
+
+* a large number of tests ([5d0a6c5](https://github.com/okikio/observables/commit/5d0a6c58cd1bcfdda07a89c2c0007691889aeabb))
+* broken tests ([2ab9031](https://github.com/okikio/observables/commit/2ab9031b95ce97935823516a46d949888af99157))
+* **ci:** format events test for actions ([885af48](https://github.com/okikio/observables/commit/885af48ab08a9483f6c9abf768f794d3738879f6))
+* **ci:** restore import-prefix lint ignores ([848d2e0](https://github.com/okikio/observables/commit/848d2e03ecf479b1434ef323ca3c7c3d2485a009))
+* deviate from spec. on error handling for observer.next/complete/error ([98f2537](https://github.com/okikio/observables/commit/98f2537a01d07a05fcd6fd3bd37284a4651e3624))
+* edge case types in timing, pipe and core operations ([7fc9324](https://github.com/okikio/observables/commit/7fc93242aca9ee003e4b4e4a09e9f58e4f7b18c6))
+* errors breaking readable streams in pull function ([44e9c0f](https://github.com/okikio/observables/commit/44e9c0f0d8b4076e8e2f0f23bc02d1fe7354e2af))
+* even more tests ([4d7c8ba](https://github.com/okikio/observables/commit/4d7c8baf5204d88d22ace51c166255bd35e60ff1))
+* events tests ([0ebac08](https://github.com/okikio/observables/commit/0ebac08902a7a0201fe14fae6741041bbe74e857))
+* **events,operators:** revert empty-subscriber fast path and use controller.error ([f6b8d69](https://github.com/okikio/observables/commit/f6b8d6996839e9ef5998978369fce8a97b730b17))
+* fix incorrect logic for replaying  item ([ad8cca5](https://github.com/okikio/observables/commit/ad8cca5506066941bb5f8b2e28f90428036d3766))
+* fix issues with observables not catch errors ([66b2948](https://github.com/okikio/observables/commit/66b29482c82c550d282e37581c4eabef4c999320))
+* fix major slow api types blocking publishing ([bd84ffb](https://github.com/okikio/observables/commit/bd84ffbbb1532d8a17cb42a25ade255dbb691d44))
+* fix operator types ([27d12e8](https://github.com/okikio/observables/commit/27d12e8fcb01356a704e23a4a2a9d514c5a3f09d))
+* improve type check of assertObservableError ([f077868](https://github.com/okikio/observables/commit/f07786805a3fac1e34984f70e6ff0e5245624a0b))
+* issues w/ delay timing ([b983ede](https://github.com/okikio/observables/commit/b983ede6714df9fc9ad14fffe1f5fe01c58a31a0))
+* non-compliance with some specific tc39 observables steps ([d5c8318](https://github.com/okikio/observables/commit/d5c83184ff46d9a4ab30adeb4781a4c7f234da9e))
+* **observable:** document bound observer methods ([b7cffa5](https://github.com/okikio/observables/commit/b7cffa50b47778137123df617859fab67e4c2297))
+* **observable:** drop detached observer binding ([f700b40](https://github.com/okikio/observables/commit/f700b40e2adf904c67ad634f223d0607de56d403))
+* **operators:** restore return short-circuit after controller.error ([f5eac66](https://github.com/okikio/observables/commit/f5eac66d370abb0748a544ea28d77e6ca6522743))
+* rejection message for waitForEvent ([c559d5f](https://github.com/okikio/observables/commit/c559d5f19ad1fa7a609af1548c13b02a2cfce868))
+* **release:** tighten validation and green ci ([95e4d4d](https://github.com/okikio/observables/commit/95e4d4d0ab8ebc6e268b6500892623183246d575))
+* remove queued teardown ([8b75e82](https://github.com/okikio/observables/commit/8b75e82536eb44f4538e75c0d73e9117ca5a2ae2))
+* **repo:** align benchmark tasks and test harnesses ([c72229c](https://github.com/okikio/observables/commit/c72229c6d8630f029b1c6e4ba9426cbde47fe767))
+* **review:** address publishing follow-up comments ([7959911](https://github.com/okikio/observables/commit/79599114d59d61bf1add0b1f885ef50a35a49e44))
+* split close subscription into mark subscription as closed and perform close subscription ([3996f5f](https://github.com/okikio/observables/commit/3996f5f12636281e004d208ec44c124169eca628))
+* **tests:** align BDD coverage with observable error and stream semantics ([d81486c](https://github.com/okikio/observables/commit/d81486c2443842ae5480aa5f9093d997aec48265))
+* **tests:** polish spec coverage naming ([e46a100](https://github.com/okikio/observables/commit/e46a100e35602b2cfa7b4d67a248b44c4813ce64))
+* **tests:** preserve standalone assertion messages ([c2ce404](https://github.com/okikio/observables/commit/c2ce404206f607a0a07e9d777602afc530c6b409))
+* **tests:** resolve remaining review-thread lint and flake issues ([cab3df1](https://github.com/okikio/observables/commit/cab3df119e1ef56e3d50418c60d8b54c5d90c8c5))
+* type issues with pipe, compose and safeCompose ([add210e](https://github.com/okikio/observables/commit/add210eeca72afe59992113830452d175d499cd7))
+* update tests to take into account new fixes ([812d5e5](https://github.com/okikio/observables/commit/812d5e526dd8a4c903f056e8bd463e0cc317e895))
+* **WIP:** fix 1/2 of the typescript type issues in dom_event_tests ([1da2571](https://github.com/okikio/observables/commit/1da2571b4b0f3df854eefd6af0008b39ed2d97b3))
+
+
+### Features
+
+* add AbortSignal support ([299b8fe](https://github.com/okikio/observables/commit/299b8fee6ef891eedefc410339a1bad8508d0cba))
+* add helpers & operators ([7fff07d](https://github.com/okikio/observables/commit/7fff07d4b83044c8f884185acda435ea59b62f2d))
+* add isObservable + isSpecObservable methods ([faefeb4](https://github.com/okikio/observables/commit/faefeb4c751de144c8dcb7cc861d5dfb698ca956))
+* add isObservableError method ([4be5fe5](https://github.com/okikio/observables/commit/4be5fe54f9f1fa17870e0e27affbcc4d82b53d6b))
+* add observable + event bus ([75fa4ed](https://github.com/okikio/observables/commit/75fa4ed98aad7106c0ccdbcb3b4b3985e995d411))
+* add operator for throwing errors ([a214329](https://github.com/okikio/observables/commit/a21432907f68653254659622240ec543d4bf208d))
+* add the values operators, that only operate directly on values while letting errors passthrough ([7b9823d](https://github.com/okikio/observables/commit/7b9823d348a6db38ecc3aff987656da4fba27f3e))
+* add tips to ObservableError ([1d25963](https://github.com/okikio/observables/commit/1d25963e80a43c7c95cd4e44ed6d89108c8e7208))
+* add withReplay utility function ([50881d7](https://github.com/okikio/observables/commit/50881d77df674d97a15dec7e82eef8734aaecfba))
+* **bench:** add comparison benchmarks and spec coverage ([bd2bde8](https://github.com/okikio/observables/commit/bd2bde8e2efde8bb60055590182015ec31ed26e8))
+* **docs:** add comprehensive instruction files and copilot-instructions.md ([3112119](https://github.com/okikio/observables/commit/3112119e301e6054515e8d806f9b9b1130c15be1))
+* implement helpers using streams internally ([e1f5bea](https://github.com/okikio/observables/commit/e1f5beab399dbff213d969faef84f92db57bb047))
+* support passing ObservableError as part of the iterator of the `pull` function ([1ab2355](https://github.com/okikio/observables/commit/1ab2355a66162a5a8435176231323a1922cf0c47))
+
+
+### Performance Improvements
+
+* add cap on replay size of 1000 ([1d52e44](https://github.com/okikio/observables/commit/1d52e446aef05bbaf1f97e8a82707355de3de616))
+* **bench:** add latency benchmarks and speed up queue wraparound ([5324282](https://github.com/okikio/observables/commit/53242822f96de446c298a00198438cb4e48da895))
+* optimize hot-paths ([91a6313](https://github.com/okikio/observables/commit/91a6313402b74f56f1feaa9609790c03927f402e))
+
 # Changelog
 
 All notable changes to `@okikio/observables` will be documented in this file.
diff --git a/deno.jsonc b/deno.jsonc
index 4937580..b863b5e 100644
--- a/deno.jsonc
+++ b/deno.jsonc
@@ -1,6 +1,6 @@
 {
   "name": "@okikio/observables",
-  "version": "0.0.0",
+  "version": "1.0.0",
   "description": "A spec-faithful yet ergonomic TC39-inspired Observable library with detailed types, tsdocs and examples.",
   "exports": {
     ".": "./mod.ts",