Squashed 'third_party/boostorg/odeint/' content from commit 6ff2719

Change-Id: If4892e29c1a5e6cf3a7aa51486a2725c251b0c7d
git-subtree-dir: third_party/boostorg/odeint
git-subtree-split: 6ff2719b6907b86596c3d43e88c1bcfdf29df560
diff --git a/CHANGELOG b/CHANGELOG
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+odeint 2.1
+
+* versioning system
+* generation functions
+* bugfixing
+
+odeint 2.2 (still running)
+
+* removing same_size and resize from state_wrapper into separate functions