NOTE: Incompatible changes in next DBI release

I may not get round to release this version for a few days but I wanted
to give some advance notice ASAP.

Here's what the Changes for currently looks like:

  WARNING: This release contains two changes that may affect your code.
  : Any code using selectall_hashref(), which was added in March 2001, WILL
  : need to be changed. Any code using fetchall_arrayref() with a non-empty
  : hash slice parameter may, in a few rare cases, need to be changed.
  : See the change list below for more information about the changes.
  : See the DBI documentation for a description of current behaviour.

  Changed fetchall_arrayref({ foo=>1, ...}) specification again (sorry):
    The key names of the returned hashes is identical to the letter case of
    the names in the parameter hash, regardless of the L</FetchHashKeyName>
    attribute. The letter case is ignored for matching.
  Changed fetchall_arrayref([...]) array slice syntax specification to
    clarify that the numbers in the array slice are perl index numbers
    (which start at 0) and not column numbers (which start at 1).
  Added { Columns=>... } and { Slice =>... } attributes to selectall_arrayref()
    which is passed to fetchall_arrayref() so it can fetch hashes now.
  Added a { Columns => [...] } attribute to selectcol_arrayref() so that
    the list it returns can be built from more than one column per row.
    Why? Consider my %hash = @{$dbh->selectcol_arrayref($sql,{ Columns=>[1,2]})}
    to return id-value pairs which can be used directly to build a hash.
  Added $hash_ref = $sth->fetchall_hashref( $key_field )
    which returns a ref to a hash with, typically, one element per row.
    $key_field is the name of the field to get the key for each row from.
    The value of the hash for each row is a hash returned by fetchrow_hashref.
  Changed selectall_hashref to return a hash ref (from fetchall_hashref)
    and not an array of hashes as it has since DBI 1.15 (end March 2001).
    WARNING: THIS CHANGE WILL BREAK ANY CODE USING selectall_hashref()!
    Sorry, but I think this is an important regularization of the API.
    To get previous selectall_hashref() behaviour (an array of hash refs)
    change $ary_ref = $dbh->selectall_hashref( $statement, undef, @bind);
        to $ary_ref = $dbh->selectall_arrayref($statement, { Columns=>{} }, @bind);
  Added NAME_lc_hash, NAME_uc_hash, NAME_hash statement handle attributes
    which return a ref to a hash of field_name => field_index (0..n-1) pairs.
  Added text to SUPPORT section of the docs:
    For direct DBI and DBD::Oracle support, enhancement, and related work
    I am available for consultancy on standard commercial terms.
  Added text to ACKNOWLEDGEMENTS section of the docs:
    Much of the DBI and DBD::Oracle was developed while I was Technical
    Director (CTO) of the Paul Ingram Group (www.ig.co.uk).  So I'd
    especially like to thank Paul for his generosity and vision in
    supporting this work for many years.

Tim.