add lots of new ChangeLog items

docs/ChangeLog

@@ -21,11 +21,13 @@ New in 2015.04
    + say now observes the .nl setting
    + exceptions in BEGIN blocks and constant are now handled better
    + binding now works again in the REPL
+   + various other REPL fixes
    + \foo variables work properly in EVAL
    + declarations like my (Str $ing, Int $eger) correctly enforce types
    + detect and complain about placeholders in attribute initializers
    + use of | prefix in the wrong place now complains at compile time
    + \(...) capture constuct handles nameds and | correctly
+   + regex interpolation now uses cursors instead of scanning
  + Deprecations:
    + the RC release in September will remove *all* deprecations
    + "use nqp" now required for silent use of nqp::ops
@@ -40,6 +42,10 @@ New in 2015.04
    + where constraints on variable and attribute declarations
    + dists are installed into a database-like way by default (via panda)
    + 'is rw' parameters implemented for native subs (they get passed as a pointer)
+   + complex and rat literals now work inside of a <> quote
+   + attempting to bind a Failure now tells you what was in the Failure
+   + reduce() now pays attention to associativity (which is now part of the op)
+   + can now reduce ([Z]) with list infixes over an arbitrary number of lists
  + Speedups:
    + Str.codes/chars/uc/lc/tc/tclc/ord/flip about 25% faster
    + List.pick about 10% faster