Add samd-timer crate release notice.

Author: Adam J

content/2020-02-29-newsletter-24.md

@@ -58,6 +58,7 @@ go here include:
 - [@rubberduck203][@rubberduck203] released the experimental [switch-hal crate][switch-hal], which provides a zero-cost abstraction over Active High/Active Low GPIO, allowing application developers to more clearly express their intent and for drivers to avoid making runtime decisions about driving a line high or low based on the pin's active level.
 - [@rubberduck203][@rubberduck203] has also released the [stm32f3-discovery board support crate][stm32f3-discovery] as an alternative to the unmaintained `f3` crate. 
 - The [stm32f3-discovery-quickstart][stm32f3-discovery-quickstart] template has been updated to utilize both the [stm32f3-discovery board support crate][stm32f3-discovery] and the [switch-hal crate][switch-hal]. It also now includes VS Code tasks for cleaning, building examples, and building in release mode.
+- [@proman21][@proman21] has released a beta version of [samd-timer][samd-timer], an abstraction for the Timer peripherals present on Atmel SAM microcontrollers. This library provides lower-level control over these timers than [atsamd-hal][atsamd-hal], while remaining compatible with the HAL clock system.
 
 If you have an embedded project or blog post you would like to have featured in the Embedded WG Newsletter, make sure to add it to [the next newsletter], we would love to show it off!
 
@@ -70,13 +71,16 @@ are submitting for yourself, please choose whatever link
 you would like for yourself.
 -->
 [@rubberduck203]: https://twitter.com/Rubberduck203
+[@proman21]: https://github.com/proman21
 
 <!--
 TODO: Put all links for content here.
 -->
 [switch-hal]: https://crates.io/crates/switch-hal
 [stm32f3-discovery]: https://crates.io/crates/stm32f3-discovery
 [stm32f3-discovery-quickstart]: https://github.com/rubberduck203/stm32f3-discovery-quickstart/
+[samd-timer]: https://github.com/proman21/samd-timer/
+[atsamd-hal]: https://github.com/atsamd-rs/atsamd/
 
 ## `embedded-hal` Ecosystem Crates