[core] #157 added new build flag EASY_OPTION_TRUNCATE_RUNTIME_NAMES which will prevent from crash for very big block names, but will reduce performance. Disabled by default because of very rare use case;
[core] #157 added new build flag EASY_OPTION_CHECK_MAX_VALUE_SIZE for EASY_VALUE arrays and strings - same as the flag above for block names. Also disabled by default;
* update copyright
* fix css parsing
* fix block name search
* add matching text highlighing for find results
* add calculation of block statistics for selected area
* new action: right-click on a block on "Diagram" selects region using left and right bounds of this block
* other optimizations
* Add support for building with pre 2016 Apple LLVM clang
* Automatically detect Apple clang that do not support thread_local
* Clarify clang thread_local support code comment