providing kwargs to create_index at store.append()
This should enable the creation of a 'full' index at append time.

Trying to solve #4424 
 I am not so sure this is a good idea. The problem is we usually want to create indexes on multiple columns. But optlevel/kind would usually be applied to a single column (e.g. optlevel=9,kind='full' which can ONLY be done on a single column)...I think the workaround is good
 Agreed. Is closing this the same as rejecting the PR? Go ahead and reject / close.
 yep...thanks
