* Text output is now markdown compatible

* Allow including picobench.hpp before defining PICOBENCH_IMPLEMENT

cmake: set min ver to 3.5 as support for lower is dropping

update deps

Fixed MinGW build

Added CLI args to run specific benchmarks or suites

* Added PICOBENCH_UNIQUE_SYM_SUFFIX

* Fixed several warnings

* Fixed same-func warning if user data is different

* Macro PICOBENCH_NAMESPACE to change namespace
* Changed marking of baseline in human-readable reports
* Minor internal changes in strings

Version 2.01

- Removed dep on pthread by using `sched_setactivity` direcly. This also fixes Android builds
- Minor doc updates

v2.00

* Breaking change! runner::run_benchmarks doesn't return a report anymore. The report is generated by runner::generate_report instead
* Breaking change! report_output_format doesn't accept output streams as arguments. Use set_output_streams.
* Potentially breaking change (gcc and clang)! Always set thread affinity to first core. Macro to turn this off.
* Added runner::run which performs a full execution
* Added benchmark results and results comparison
* Added error enum
* Macro option to allow a std::function as a benchmark
* Macros for default iterations and samples
* Allowing local registration of benchmarks in a runner
* Added local_runner which doesn't consume registry
* More force-inline functions in states
* Fixed some potential compilation warnings
* Removed tests from header
* Anonymous namespace for impl-only classes and funcs
* Added setters and getters for every config option

* Counting iterations of state

* Optionally set thread affinity when running benchmarks so as not to miss cpu cycles with the high res clock

Some missing tests