Update CHANGELOG.md

v0.4.8 changes

Author: codereverser

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## 0.4.8 - 2021-06-27
+- `REVERSAL` TransactionType to indicate reverted/rejected transactions
+- convert all enums to strEnums for better readability [(#35)](https://github.com/codereverser/casparser/pull/35)
+- fix issue with parsing multi-line transactions
+
 ## 0.4.7 - 2021-06-01
 
 - Minor bug fixes in summary statement parser.
@@ -121,4 +126,4 @@
 
 ## 0.1.0 - 2020-10-11
 
-- Initial release
+- Initial release