Log Message:
(lang/rakudo) Updated 2020.08.02 to 2020.10

New in 2020.10:

    Additions:
        Implement MAIN parameter bundling via the %*SUB-MAIN-OPTS<bundling>
        option [75f92d2][04164a0]
        Generate a rakuw.exe executable on Windows which will not spawn
        a console window (in contrast to the raku.exe executable) [0ea6902][708d0ca]
        Add Rakudo(TM) and Raku(welcome message [80a4ada][4e9178f][bae905e]
    Changes:
        Add a new implementation for multi-level Hash slicing,
        not backward-compatible with 6.c version and to be enabled since 6.e
        [551b577][f106c23][6986ea1][8a2d9a6][1c08e66][1c08e66]
        [d08247d][94d8968][18f3808][4b278bc][f9b3f92][b1ec248]
        [d6e94ae][564faa6][93503c2][b60772f][198f603][ff2f2b0]
        [420cb1f][c701a48][1971ba4][964f6e4][3ca1fed][54eb431]
        [d713e45]
        False.truncate returns False instead of 0 now [7192a99]
        Make "is rw" on parameters of MAIN worry [d0854ff]
        Change IterationBuffer.raku output.
        Note that IterationBuffer.raku is a debugging tool: it does
        not roundtrip, nor is it the intent that it ever will. [33bb650]
    Efficiency:
        Adapt to simplified nqp::isprime_I [80bf1db]
        Make %a{a;b} about 30% faster [a577409]
        Further simplify %h{a;b;c} candidate [e435a08]
        Make Hash.DELETE-KEY on a non-existing key 40% faster
        [3131ce2][fcabad4]
        Make making a Uni between 1.5x and 22x as fast [2999be3]
        Make .grep/.first on native arrays about 3.5x as fast
        [240bc9e][cf23947]
        Make .unique/.repeated/.squish on native arrays faster [c37ffe7]
    Fixes:
        Fix stub packages in multi part declarations only knowing
        part of their name [51db534]
        Build System: Add a check to prevent building a Rakudo with a
        stale NQP version [4dbdcb8][d8db03b]
        Make BUILD(ALL)PLAN output a bit clearer [a26beb6]
        Make $*USER and $*GROUP return correct values on some non-English
        locales [6a89d71]
        Fix possible race in multi-threaded precompilation [1294621]
        Produce a better error message for my &MAIN = { } [e0e24a8]
        Fix issue with Z / X used with set operators [338c743]
        Produce a better error message for incorrect code infix:(&) [4af961e]
        Fix NativeCall/C++ to allow double instantiation [ecaf334][f3ffb70]
        An attempt to copy a directory to a file does not remove the file
        anymore [41a76ca]
        Fix a problem with multi submethods been treated as method [7cfca09]
    Internal:
        More fixes to the binary release scripts [bd029ae][99acfa9]
        Move Int candidates from Numeric.pm6 to Int.pm6 [bf799ba]
        Add .gitattributes file and specify file extensions [42e0434]