Array Utils

Allows constexpr construction by:
Function makeArray() to create array of types with complex constructions.
Function makePairArray() to create mapped arrays.

Allows search:
Functions findKey(), find() to find pair in array using key.
Function findValue() to find pair in array using value.

Pair array advanteges:

• Zero memory overhead and the same size as std::array
• Can be stored on static mamory or stack
• Linear search is ~3x faster than std::maps for small number of elements
• Doesn't require operator< or hash

Recommended to replace std::map when number of elements is less than 15.
When number of elements is greater than 1000 std::unordered_map is recommended.
More about tests in TESTS.md.

Configuration

Library requires STL with c++14 or greater.
For PlatformIO. Add to platformio.ini:

build_flags =
	-std=c++14
	-std=gnu++14
build_unflags =
	-std=gnu++11

For Arduino IDE. At boards package installation folder create platform.local.txt:

compiler.cpp.extra_flags=-std=c++14