Put changes under the appropriate header. Headers can include API CHANGES,
DIFFERENT BEHAVIOR, BUG FIXES, DEPENDENCIES, ENHANCEMENTS, NEW FEATURES, and
OTHER. Entries should be in chronological order, i.e. oldest at the top

0.42  Fri, Dec 9, 2016

  [NEW FEATURES]
  
  * It is now possible to indicate filter functions by name, rather than
    by package.
  
  [BUG FIXES]
  
  * Build.PL now removes names.txt and share/perl.h.cache. This is not
    important for basic installation, but shows up when the distribution
    is repeatedly compiled in the same directory against different
    versions of Perl.
  
  * Executable code is now relocated to a location in memory that is
    properly aligned with modern CPU page alignments. This is hard-coded
    at the moment at 4096 bytes. Without this alignment, code compiled in
    clex blocks would sometimes perform dismally. This showed up most
    obviously in the rng and random-access benchmarks that were recently
    added to the benchmarks folder. Before this fix, the C::Blocks rng
    implementation would often perform as slowly as the Perl one.

0.41  Mon, Nov 28, 2016

  [API CHANGES]
  
  * cisa has been removed! C::Blocks now uses the built-in type
    annotation facilities of Perl. Short type names are provided by
    C::Blocks::Types.
  
  [DEPENDENCIES]
  
  * Bumped Alien::TinyCCx dependency to v0.12, which fixes struct
    alignment issues and enum handling.
  
  [ENHANCEMENTS]
  
  * Perl package globals are now properly resolved. If you make a
    reference some $Some::Package::Scalar in your C code, it'll properly
    retrieve the SV named $Scalar from the package Some::Package.
  
  [NEW FEATURES]
  
  * New module C::Blocks::Types provides short type names
  
  * Double-colons are now processed by the code extractor and converted
    into double-underscores. So if you use Some::Thing in your C code
    block, it'll be immediately converted to Some__Thing.
  
  * Source filters! C::Blocks source filters are given the contents of
    the C code, start to finish, to manipulate. While it would be nicer
    to hook directly into the parser, this provides 99% of the desired
    functionality with 1% of the required effort of a parser hook.
  
0.40  Fri, Aug 12, 2016

  [DEPENDENCIES]
  
  * Bumped Alien::TinyCCx dependency to v0.11, which should properly
    support 64-bit Macs.
  
  [BUG FIXES]
  
  * Revised the perl.h symbol table caching in PerlAPI.xs.PL to use the
	tcc -run option instead of producing a shared object file. It does
	not need to produce anything---it just needs to cache the symbol
	table---but in order to get the default tcc to do that, I need to
	give it a compile target. Shared objects gave trouble on Macs, but
	tcc -run does not. An alternative fix would be to change tcc itself
	to add a "no output" target, or some such. In the meantime, this
	seems to solve the problem.
  
0.05  Thu, June 2, 2016

  [DIFFERENT BEHAVIOR]
  
  * When a C::Blocks package has one or more cshare blocks, C::Blocks
    used to add C::Blocks::libloader to the package's @ISA list. Now it
    directly injects the import method from C::Blocks::libloader into
    the current package, or warns if the package already has an import
    glob entry in its stash. This makes it possible to use cshare in a
    class defined using Moo (and probably many other OO frameworks).
  
  [DEPENDENCIES]
  
  * The build process now depends upon Test::Warn, which is used (not
    surprisingly) to test warning messages, and the lexical control
    thereof.
  
  * Bumped Alien::TinyCCx dependency to v0.10, which should properly
    support Macs.
  
  [NEW FEATURES]
  
  * C::Blocks provides lexically-scoped warnings categories of
    C::Blocks::import, C::Blocks::compiler, and C::Blocks::linker.

0.04  Tue, May 3, 2016

  [API CHANGES]
  
  * Shared libraries are now indicated with the package array
    @C::Blocks::libraries_to_link rather than the package scalar
    $C::Blocks::library_to_link.
  
  [DEPENDENCIES]
  
  * Bumped Alien::TinyCCx dependency to v0.08.
  
  [BUG FIXES]
  
  * csub works!
  
  [ENHANCEMENTS]
  
  * Can now link multiple shared libraries to a single block, though
    the functionality is not yet tested.
  
  * Using sigiled variables automatically loads the PerlAPI symtab.
  
  [NEW FEATURES]
  
  * Added interpolation blocks! It is now possible to use Perl to
    produce C code. They're kinda like fancy C macros, sorta.
  
  * Added cisa, providing a system akin to typemaps.
  
  * Added C::Blocks::Object::Magic, a port of XS::Object::Magic. This
    makes it much easier to safely attach C structs to Perl variables.
  
  [OTHER]
  
  * The use of preprocessor branching in Blocks.xs has been cleaned
    up a bit, which will hopefully make the distribution more robust.

0.03  Fri, Dec 4, 2015

  [DEPENDENCIES]
  
  * Added explicit dependency on ExtUtils::ParseXS v3.0. With prior
    versions, if you had multiple .xs files, the boot sections would
    collide in very, very strange ways. The default EU::PXS for v5.14
    (on perlbrew at least) is old, so this ensures correctness.
  
  [BUG FIXES]
  
  * Revised symbol detection and building logic for Linux systems
  
  * Scrubbed various command-line preprocessor defines which sometimes
    caused trouble on Debian systems. Similar corrections will surely be
    needed for other flavors of linux.
  
0.02  Thu, Aug 6, 2015

  [ENHANCEMENTS]
  
  * Sigil variable incorporation works for much older Perls
  
  * Can now incorporate sigiled variables with @ and % sigils
  
  * Gentle name mangling means C variables can have the same name as
    Perl variables
  
  * Much more robust handling of sigil characters and braces in quoted
    strings, as well as braces in comments

0.01  Mon, Aug 3, 2015

  Initial release!
