## 2019-01-01: Virtual 2018q4 release

This is a virtual release only for reference that covers everything from
2018-10-01.

No breaking changes.

Features:

- SCons: Multi-repository build script generation.
- AVR: Add libstdc++
- Doxygen: Refactor Doxygen groups to match lbuild structure.
- STM32F0/F3/F7/L0: Add I2C driver.
- STM32L4: Add SPI (via USART) driver.
- STM32F0: Add ADC driver.

Fixes:

- STM32: Timer dead time register mask.
- STM32L4: ADC driver fixed for L4x2.

New device drivers:

- PCA9548A I2C multiplex driver as `modm:driver:pca9548a`.

Many thanks to all our contributors.
A special shoutout to first timers 🎉:

- Antal Szabó (@Sh4rK)
- Benjamin Weps (@nesos) 🎉
- Carl Treudler (@cajt)
- Christopher Durand (@chris-durand)
- Fabian Greif (@dergraaf)
- Jörg Hoffmann (@19joho66) 🎉
- Kaelin Laundry (@WasabiFan) 🎉
- Linas Nikiperavicius (@linasnikis) 🎉
- Mike Wolfram (@mikewolfram) 🎉
- Niklas Hauser (@salkinium)
- Niklas Meyer (@Zweistein885) 🎉
- Patrick Servello (@patrick--) 🎉
- Pavel Pletenev (@ASMfreaK) 🎉
- Raphael Lehmann (@rleh)
- Sascha Schade (@strongly-typed)
- Sebastian Birke (@se-bi)
- Thomas Figueroa (@OperativeF) 🎉
- Zawadniak Pedro (@PDR5) 🎉

<details>
<summary>Detailed changelog</summary>

#### 2019-11-26: Add PCA9548A I2C multiplex driver

PR #81 -> 77ae899.  
Tested in hardware by @strongly-typed.

#### 2019-11-26: Add ADC driver for STM32F0

PR #132 -> af2b352.  
Tested in hardware by @cajt.

#### 2019-11-10: Add USART-SPI driver for STM32L4

PR #122 -> 544f6d3.  
Tested in hardware by @chris-durand.

#### 2019-11-06: Add I2C driver for STM32F0/F3/F7/L0

PR #118 -> e46e7df.  
Tested in hardware by @chris-durand.

#### 2019-10-15: Refactor Doxygen groups to match lbuild structure

PR #102 -> feb1f3c.  
Tested by @salkinium.

#### 2019-10-10: Add libstdc++ subset for AVR

PR #82 -> eba68a4.  
Tested in hardware by @chris-durand.

</details>
