Certain versions are internal and may not be released because there may not be significant changes, if that's what you meant to ask about missing version sequences.
We try not to make any changes that render code from past SDK versions unusable. Slight tweaking may be necessary, of course. For example, the configuration BIN files etc would be backward compatible. But some new functions may be added to new releases that must be called.
There will be continued support for recent SDKs, especially in case of major flaws. However, we highly recommend using the latest SDKs because they usually contain patches/fixes from past versions - that is why they are new releases. The changelog should make things clear anyway. 
Statistics: Posted by Guest — Sat Jul 23, 2016 3:30 pm
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