Added change log file

Author: bbogush

CHANGELOG.md

@@ -0,0 +1,12 @@
+## [1.0.0] - 2018-11-25
+- Initial release. Basic NAND operations support.
+## [2.0.0] - 2019-03-09
+### Added
+- Reading of bad blocks.
+- Skipping of bad blocks during read/write/erase.
+- New PCB with smaller size, serial, LEDs and SWD instead of J-TAG.
+- Firmware error codes.
+- Firmware support of read and write LEDs.
+### Fixed
+- File-Save operation.
+