CHANGES: Start listing changes since 2021.12.

CHANGES

@@ -1,3 +1,28 @@
+[> 2022.04, released on XXX
+----------------------------------------
+
+	[> Issues resolved
+	------------------
+	- software/bios/mem_write: Fix write address increment.
+
+    [> Added Features
+	-----------------
+	- litex_setup:        Add minimal/standard/full install configs.
+	- soc/arguments:      Improve default/help, add parser groups.
+	- LiteSPI/phy:        Simplify integration on targets.
+	- openocd/stream:     Simplify ECP5 JTAG-UART/JTAGBone use.
+	- tools/litex_cli:    Allow passing reg name to --read/--write.
+	- soc/add_spi_sdcard: Allow optional Tristate (useful on ULX3S).
+	- software/bios:      Add new mem_cmd memory comparison commmand.
+	- cpu/rocket:         Increase IRQ lines to 8.
+	- cpu/serv:           Add MDU support.
+	- cpu/marocchino:     Add initial support.
+	- cpu/eos_s3:         Add LiteX BIOS/Bare Metal software support.
+
+    [> API changes/Deprecation
+	--------------------------
+	- Fully deprecate SoCSDRAM/SPIFlash core (replaced by LiteSPI).
+
 [> 2021.12, released on January 5th 2022
 ----------------------------------------