Update README.txt.

README.txt

@@ -1,3 +1,6 @@
+v1.50.0: *Field values from arbitrary analyses, e.g. Kleborate and rMLST
+          species id, stored as JSON can now be registered and included in
+          isolate queries, export, and analysis.
 v1.49.1: *Fix for lincodes.pl for use with latest version of PDL module.
          *Improved layout of site user registration and admin pages.
          *Users can now upload their own genomes using .tar.gz or .tar files

Upgrading_README.txt

@@ -55,6 +55,7 @@ Version 1.46: Change of isolate database structure.
 Version 1.47: Change of isolate database structure.
 Version 1.48: Change of isolate database structure.
 Version 1.49: Change of authentication database structure.
+Version 1.50: Change of isolate database structure.
 
 Details can be found below.
 
@@ -684,3 +685,10 @@ There is a change to the  authentication database structure needed to support
 personal API keys.
 
 Please run auth_v1.49.sql against bigsdb_auth.
+
+Version 1.50
+------------
+There are new tables to support registering arbitrary analysis fields for data
+queries, export and analysis.
+
+Please run the isolatedb_v1.50.sql script against isolate databases.