VOTable response version

[molinaro-m]

Currently the document says (§3 Succesful Response):

[...] VOTable format (version 1.0 or later) [...]

where the goal was to relax the previous 1.0 to 1.1 limitation.
However, for TIME aware responses, VOTable 1.4+ would be required due to the TIMESYS PARAM addition.

I suppose this issue could be solved by modifying the wording to something like:

... must be in VOTable format. The appropriate VOTable version may vary depending on the service response and needed features; e.g. when returning properly annotated time records, VOTable must be of version 1.4+ due to the addition of the TIMESYS param.

[molinaro-m]

There's a proposed erratum that tries to solve this issue at:

SimpleConeSearch v.1.03 Erratum 2

The issue solution will cover more than the reported time apsects of the current mandatory versions limitation.
ConeSearch-1.1 will need to include a similar flexibility.

[molinaro-m]

Pull request #55, while resetting the document format, embeds all existing errata to REC 1.03. Thus fixing this issue also.