added Changelog entry 3.4

ChangeLog

@@ -1,7 +1,14 @@
+2023-12-10 Timo Lassmann <timo.lassmann@telethonkids.org.au>
+
+ * version 3.4.0
+ - Added a simple sequence simulator for testing
+ - Fixed an issue where alignments would be slighly different
+ depending on the number of threads used. 
+
 2022-11-05 Timo Lassmann <timo.lassmann@telethonkids.org.au>
 
  * version 3.3.5
- - Added a check to find and remove sequences of length 0. 
+ - Added a check to find and remove sequences of length 0.
 
 2022-10-28 Timo Lassmann <timo.lassmann@telethonkids.org.au>
 
@@ -13,7 +20,7 @@
  here: Myers, Gene. "A fast bit-vector algorithm for approximate string matching
  based on dynamic programming." Journal of the ACM (JACM) 46.3 (1999): 395-415).
  This means Kalign will now run equivalently on processors with and without AVX2
- instructions (e.g. apple M1 / M2 and ARM chips).
+ instructions (e.g. Apple M1 / M2 and ARM chips).
  3) alignment types giving users more control over alignment parameters.
  4) multi-threading