Changelog for Extra

1.4.2
    Make concatMapM/mapMaybeM faster
1.4.1
    Make temp file functions workaround GHC bug #10731
    Add retryBool
1.4
    Add stripInfix and stripInfixEnd
1.3.1
    #9, support directory-1.2.3
1.3
    Add whenJustM
    Add errorIO
1.2
    Add onceFork
    Make once async exception safe
    Fix a deadlock in once when two people request in parallel
    Fix a missing hClose in captureOutput
1.1
    #7, add nubOrd, nubOrdOn, nubOrdBy
    #6, add groupSortOn and groupSortBy
    #5, add splitAtEnd
1.0.1
    Make listFilesAvoid drop trailing path separators before testing
    #3, add a constraint base >= 4.4
1.0
    No changes
0.8
    Fix a bug in writeFileEncoding/writeFileUTF8
0.7
    Fix for missing case in withNumCapabilities
0.6
    Ensure barrier is thread-safe
    Make subsequent signalBarrier calls throw an exception
    Add timeout function
    Make sure sleep never wraps round an Int
0.5.1
    Use uncons from GHC 7.9 and above
0.5
    Use the sortOn from GHC 7.9 and above
    Remove getProcessorCount
    Remove getDirectoryContentsRecursive in favour of listFilesRecursive
    Change the signature for newTempFile/newTempDir
    Add a once function
0.4
    Remove all but the extractors on triples
    Remove groupSortOn
    Remove dropAround
0.3.2
    Remove use of ===, allows older QuickCheck versions
0.3.1
    Fix a bug in breakEnd/spanEnd
0.3
    Rename showTime to showDuration
    Add stringException
    Eliminate rep/reps, use replace instead
    Switch distinct for allSame/anySame
    Optimise the numeric conversions
    Rename chop to repeatedly
    Add whenM/unlessM
    Redo the Tuple module, additions and deletions
    Add newTempFile, newTempDir
    Add createDirectoryPrivate
    Rename strip* to trim*
    Generalise showException
0.2
    Redo the cons/uncons functions
    Add withTempDir
    Rename withTemporaryFile to withTempFile
    Change trim to strip (follow text naming convention)
    Ensure operators get exported
0.1
    Initial version, still unstable
