Version 0.3.4

_posts/2017-02-10-Released-Cyclone-Scheme-0.3.4.md

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+---
+layout: post
+title: Released Cyclone Scheme 0.3.4
+excerpt: Cyclone Scheme 0.3.4 is now available.
+---
+
+Features
+
+- Koz Ross added implementations of the following SRFI's:
+
+     - SRFI 28 - Basic format strings
+     - SRFI 60 - Integers as bits
+     - SRFI 121 - Generators
+
+- Allow a program to have more than one `import` declaration. A program can now also use `cond-expand` to selectively expand `import` declarations.
+- Added the `-A` and `-I` compiler options from SRFI 138 to `cyclone`:
+
+  > `-A directory` 
+  >
+  > Append directory to the list of directories that are searched in order to locate imported libraries.
+  >
+  > `-I directory`
+  >
+  > Prepend directory to the list of directories that are searched in order to locate imported libraries.
+
+- Added the `-CP`, `-CE`, and `-CL` compiler options to allow passing arbitrary flags to the C compiler:
+
+ > `-CP cc-commands`
+ >
+ > Specify a custom command line for the C compiler to compile a program module. See Makefile.config for an example of how to construct such a command line.
+ >
+ > `-CE cc-commands`
+ >
+ > Specify a custom command line for the C compiler to compile an executable.
+ >
+ > `-CL cc-commands`
+ >
+ > Specify a custom command line for the C compiler to compile a library module.
+
+- Updated the garbage collector to enhance performance for programs with a high allocation rate, and to scale better to multiple concurrent threads.
+- Improved error handling by `display` and `write`.
+- Removed the `make_int` C macro which was deprecated and could cause problems when used in FFI functions.
+- Added a `with-handler` exception handler form based on the syntax from Bigloo.
+
+Bug Fixes
+
+- Thanks to Koz Ross, `equal?` has been updated to check bytevectors for deep equality. 
+- Prevent crashes when allocating large bytevectors.
+- Display characters such as `#\space` correctly when output via `write`.
+- Thanks to Seth Alves, removed unnecessary include of `ck_string.h` which is not provided in older versions of `libck`.
+