version converter: incomplete string conversion

[JuliaSprenger]

The representation of strings in odml file version 1.1 is using quotation marks around individual string value entries. These are not added using the version converter, resulting in the splitting if single values containing commata in odml file version 1.0 to multiple values in odml file version 1.1.

An example file can be found here https://web.gin.g-node.org/INT/multielectrode_grasp/src/master/datasets/l101210-001.odml for the 'Location' property in the 'Setup' section.

[mpsonntag]

It seems that its not the VersionConverter that creates the issue, but rather that the xmlparser does not work properly in extracting single entry strings containing commata.

Even if a single string value with commata is wrapped in quotation marks, the value still is chopped up at each comma.