[src] Fix gcc 11 build

[ ADD ] add link how to align executable code for stable perf results

Merge pull request #71 from alashworth/patch-1

chore: update CMakeLists.txt

[ ADD ] support sanitizers for unit tests and examples

[ FIX ] fix left alignment in default reporter formatter

[ REF ] remove redundant include in Benchmark_FB_AG.h

[ ADD ] add ability to choose generator for benchcompile

[ REF ] avoid multiple calls to Config::Instance during initialization

[ REF ] simplify sequences comparison in unit tests

[ REF ] simplify MAResultsContainer unit tests

[ ADD ] add --list command line option to enumerate benchmarks

[ REF ] license changed to Boost Software License as more permissible

[ REF ] add unit tests for scoped_optional

[ REF ] use scoped_optional for filter setup