ASM 6.1 released

The ASM 6.1 version has been released.

Besides a new V10 constant for Java 10 class files, there are no new 
features compared to 6.0. However, internally, a lot of changes have 
been made (see below; almost each line of code has changed).

Release notes:

- xml package deprecated
- project layout changed to Maven style
- build system changed from Ant to Gradle
- coding style changed to Google Java style
- code quality and readability improved a lot
- code quality tracked with SonarQube (http://sonarqube.ow2.org/projects)
- performance improvements
- unit tests improved: migrated to JUnit 5, faster, coverage > 95%
- non-regression tests added for past issues
- benchmarks improved: now use JMH 
(http://openjdk.java.net/projects/code-tools/jmh)
- new Gitlab Continuous Integration pipeline
- small bug fixes related to modules. See
* https://gitlab.ow2.org/asm/asm/merge_requests/20/
* https://gitlab.ow2.org/asm/asm/merge_requests/19/
- bug fixes:
* #317800: Resizing jump instruction adds invalid stack frame to a class 
without frames
* #317802: MethodRemapper.visitInvokeDynamicInsn mutates source bsmArgs
* #317804: Adjust CheckModuleAdapter so Module attribute in 54.0+ class 
file cannot contains a requires java.base with ACC_TRANSITIVE or 
ACC_STATIC_PHASE
* #317807: Asymmetry of ClassWriter for bytecode versions higher than 
the one that ClassReader accepts
* #317809: CheckMethodAdapter rejects valid Java and JVM identifiers 
with surrogate characters

Backward binary compatibility is preserved, but the behavior at runtime 
has changed in a few areas:
- ACC_SYNTHETIC flag vs Synthetic attribute, see 
https://gitlab.ow2.org/asm/asm/merge_requests/17
- numbering of synthetic parameters: see 
https://gitlab.ow2.org/asm/asm/merge_requests/56
- StringBuffer no longer used in util (Printer.buf deprecated, use 
stringBuilder instead)

The ASM team


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