Return map instead of list when loading data.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14867 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Adding missing import.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14868 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Return root seqsymmetry from bioseq.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14869 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merge remote-tracking branch 'upstream'