Release 0.2.0

What's Changed

• fix: remove hardcoded ldflags by @f0rmiga in #23
• fix: cacheable artifacts by @f0rmiga in #24
• fix: build_sysroot.sh script path by @f0rmiga in #25
• feat: work with RBE by @f0rmiga in #26
• rm: rules_perl by @f0rmiga in #30
• feat: .bazelrc.user by @f0rmiga in #31
• fix: missing gcc runtime shared object deps by @f0rmiga in #28
• feat: compatible with macos host for rbe by @f0rmiga in #29
• feat: linux remote platform for rbe by @f0rmiga in #32
• refactor: cleanup repository rule api by @f0rmiga in #33
• fix: user_compile_flags for all compile actions by @f0rmiga in #35
• feat: pure c and static stdc++ features by @f0rmiga in #36
• fix: use a well-maintained image for rbe by @f0rmiga in #34
• rename: pure_c -> no_libstdcxx by @f0rmiga in #37
• rename: workspace by @f0rmiga in #38
• refactor: simplify toolchain registration by @f0rmiga in #39
• feat: sanitizers by @f0rmiga in #40
• feat: lazy loading toolchain files and sysroots by @f0rmiga in #42
• feat: cross-compile sysroots by @f0rmiga in #44

Full Changelog: 0.1.1...0.2.0