added OnStickyHeaderChangedListener
save and restore instance state of wrapped list, and delegate setMultiChoiceModeListener
Merge pull request #260 from mtotschnig/pull_request

save and restore instance state of wrapped list, and delegate setMultiCh...
fix crash on Eclair and Froyo
added OnStickHeaderChangedListener note to README
Merge pull request #261 from mtotschnig/pull_request

fix crash on Eclair and Froyo
Merge pull request #256 from dmccartney/master

added OnStickyHeaderChangedListener
bumped version code
Merge branch 'master' of https://github.com/emilsjolander/StickyListHeaders