1. Add char output
2. Replaced curly braces with parentheses
3. Impoved performance for string output
4. Add custom separator support

Add googletest as a submodule

1. Change namespace to tul and include it into namespace flow
2. Now to output tuple-like object you should use flow::tul::io function and pass it's result into stream instead of using operator<< exactly on tuple-like object
3. Project structure refactoring

1. Now tutils::for_each is noexcept in case when passed function is noexpect for each tuple element
2. Add google tests for all functionality

1. Change namespace from cpp to tutils
2. Now tutils::aggregate_size uses binary search to get number of fields instead of linear algorithm
3. Implementation of tutils::aggregate_size moved to the separate file aggregate_size.hpp

Fix a broken c++ version check for MSVC compiler

Add for each cycle for tuple, which call passed function to every element in tuple

Add basic functionality such as

1. Create struct from tuple
2. Pass tuple to ostream
3. Pass values from istream to tuple
4. Get aggregate type fields count