release: v0.12.0

Native x86-64 is the default backend with a complete internal assembler and
internal linker — compiling and linking with zero external tools (QBE is now
opt-in via --backend qbe, deprecated).  Incremental, per-unit compilation is
the default, and per-unit OPDF makes incrementally-built multi-unit programs
fully debuggable in pdr.  Ships a real opt-in stdlib: JSON, SHA-1/Base64, RFC
4122 GUIDs, TCP sockets, WebSockets, a minimal HTTP/1.1 server, plus the
blaise.testing framework.  .bif format advanced to v2.

Includes two incremental-toolchain fixes folded in before release: the internal
linker now errors instead of silently emitting a runtime-less binary when
blaise_rtl.a is unreachable, and warm --unit-cache rebuilds propagate staleness
to dependents of an edited unit (previously raised EImportError / could crash).

Fixpoint verified at 410477 lines of QBE IR — FIXPOINT_OK, NATIVE_FIXPOINT_OK,
NATIVE_INTERNAL_OK, and WARMCACHE_FIXPOINT_OK all green.  3745 compiler tests
(1 ignored) + 57 stdlib tests passing.

compiler/src/main/pascal/Blaise.pas

@@ -40,7 +40,7 @@ type
   TBackend = TBackendKind;
 
 const
-  Version = '0.12.0-SNAPSHOT';
+  Version = '0.12.0';
   CompilerName = 'Blaise';
 
 { Build the --backend usage fragment from the registered drivers, with

compiler/src/main/pascal/uCompilerId.pas

@@ -24,7 +24,7 @@ unit uCompilerId;
 interface
 
 const
-  COMPILER_ID = 'blaise-0.12.0-SNAPSHOT+bif2';
+  COMPILER_ID = 'blaise-0.12.0+bif2';
 
 implementation
 

project.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project>
   <name>blaise</name>
-  <version>0.12.0-SNAPSHOT</version>
+  <version>0.12.0</version>
   <author>Graeme Geldenhuys</author>
   <license>Apache-2.0 WITH Swift-exception</license>