allow more comfortable ini configuration like
[configsection]
value1=foo
value2=bar
value3=dummy
[configsection.subsection]
value1=foo
value2=foo
value3=foo
value4=foo
[configsection.subsection.subsubsection1]
value1=foo
value2=bar
value3=blub
value4=dummy
[configsection.subsection.subsubsection2]
value1=foo
value2=bar
value3=blub
value4=dummy

change BaseConfiguration to use '.' as section delimiter by default without the ability to change it
allow requesting and setting values and section of lower levels by using the subsection delimiter
examples
$section -> getSection($name='subSection.subSubSection');
$section -> setSection($name='subSection/subSubSection', $newSubsection);