Failing to read first 10 versions of the table

[avaneeshqb]

In #39, a new piece of code was added to raise error when _last_checkpoint is not present.
But since that change, I can't read any delta version before at least 10 versions of the table are added as the _last_checkpoint file is only created after at least 10 versions.

Would it better to instead look for *.json or some other file to validate if it's a delta table?

[jeppe742]

hmm, good point @avaneeshqb.

Let me quickly fix it. Perhaps we should just look for the _delta_log folder instead.
That should always exist

[jeppe742]

@avaneeshqb Think i managed to fix it. Please have a look at the newest version 😃