[doc/announce/2010.05] added May announcement

doc/announce/2010.05

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+It is with undue sprightliness that I want to announce, on behalf of the Yapsi
+development team, the May 2010 release of Yapsi, a Perl 6 compiler written in
+Perl 6.
+
+You can get it here:
+
+ <http://github.com/downloads/masak/yapsi/yapsi-2010.05.tar.gz>
+
+Yapsi is implemented in Perl 6. It thus requires a Perl 6 implementation to
+build and run. We recommend the 'alpha' branch of Rakudo for this purpose.
+
+Yapsi is an 'official and complete' Perl 6 release. It's official because we
+have little labels with the word 'official' on them that we glue to each
+download that takes off from github. (That much gluing takes a lot of work,
+but we think of it as a community service.) It's complete in the sense that
+all of the things it implements, it does. With gusto.
+
+Instructions for getting Yapsi up and running:
+
+1. Make sure you have a built Rakudo alpha in your $PATH as 'alpha'.
+2. Download Yapsi from <http://github.com/masak/yapsi/downloads>
+3. ...
+4. Profit!
+
+The third (optional) step consists of running 'make' in the Yapsi directory.
+This will precompile Yapsi, making startup times much more bearable.
+
+The big change since last month is that Yapsi now does immediate blocks.
+
+$ export PERL6LIB=`pwd`/lib
+
+$ ./yapsi -e 'my $a = 42; { my $a = 7; say $a }; say $a'
+7
+42
+
+For other changes, see the doc/ChangeLog file.
+
+This release, as opposed to the last one, contains hidden bugs. We encourage
+you to help us find them; if not for the fame and glory, than at least for the
+Schadenfreude.
+
+Yapsi consists of a compiler and a runtime. The program is compiled down into
+an instruction code, which can be stored and executed weeks, years or even
+days [sic] later. If you want, you can execute the same piece of SIC seceral
+times over. All SIC listings start with a versioning line saying e.g. "This
+is SIC v2010.05". At this point during Yapsi development, we provide no
+guarantees about backwards compatibility whatsoever. Expect breakage between
+monthly releases.
+
+An overarching goal for making a Perl 6 compiler-and-runtime is to use it as
+an server for various other projects, which will hook in at different steps:
+
+* A time-traveling debugger (tardis), which will hook into the runtime.
+* A coverage tool (lid), which will also hook into the runtime.
+* A syntax checker (sigmund), which will use output from the parser.
+
+Another overarching goal is to optimize for fun while learning about parsers,
+compilers, and runtimes. We wish you the appropriate amount of fun!