CompilerGym v0.2.2

Amongst the highlights of this release are support for building with CMake and a new compiler environment based on loop unrolling. Many thanks to @sogartar, @mostafaelhoushi, @KyleHerndon, and @yqtianust for code contributions!

• Added support for building CompilerGym from source on Linux using CMake (#498, #478). The new build system coexists with the bazel build and enables customization over the CMake configuration used to build the LLVM environment. See INSTALL.md for details. Credit: @sogartar, @KyleHerndon.
• Added an environment for loop optimizations in LLVM (#530, #529, #517). This new example environment provides control over loop unrolling factors and demonstrates how to build a standalone LLVM binary using the new CMake build system. Credit: @mostafaelhoushi.
• Added a new BenchmarkUri class and API for parsing URIs (#525). This enables benchmarks to have optional parameters that can be used by the backend services to modify their behavior.
• [llvm] Enabled runtime reward to be calculated on systems where /dev/shm does not permit executables (#510).
• [llvm] Added a new benchmark://mibench-v1 dataset and deprecated benchmark://mibench-v0 (#511). If you are using mibench-v0, please update to the new version.
• [llvm] Enabled all 20 of the cBench runtime datasets to be used by the benchmark://cbench-v1 dataset (#525).
• Made the site_data_base argument of the Dataset class constructor optional (#518).
• Added support for building CompilerGym from source on macOS Monterey (#494).
• Removed the legacy dataset scripts and APIs that were deprecated in v0.1.8. Please use the new dataset API. The following has been removed:
  • The compiler_gym.bin.datasets script.
  • The properties: CompilerEnv.available_datasets, and CompilerEnv.benchmarks.
  • The CompilerEnv.require_dataset(), CompilerEnv.require_datasets(), CompilerEnv.register_dataset(), and CompilerEnv.get_benchmark_validation_callback() methods.
• Numerous other bug fixes and improvements.

Full Change Log: v0.2.1...v0.2.2