Update README.md

Adding version 0.75

Author: shaunmahony

README.md

@@ -25,10 +25,12 @@ PLoS Computational Biology (2014) 10(3):e1003501
 Major History:
 --------------
 
+Version 0.75 (2020-07-09): Fixing mishandling of multimapped reads in BWA output BAM files. Option --nonunique now works as expected. 
+
 Version 0.74 (2017-04-01): MultiGPS now produces BED files by default (change inherited from update to seqcode-core). 
 
 Version 0.73 (2017-02-17): Minor update that includes support for full-genome FASTA files in --seq option and other updates to support Galalxy integration.
 
 Version 0.72 (2016-11-23): First release in this repo. Fixed several bugs for stability.  
 
-Version 0.5 (2014-03-01): Initial release with publication. This version predates the current repo, but code is archived here: http://mahonylab.org/software/multigps
+Version 0.5 (2014-03-01): Initial release with publication. This version predates the current repo, but code is archived here: http://mahonylab.org/software/multigps