finished unit tests for enumeration
update enumeration operations to be inline when not constexpr
update enumeration iterator tests
update optimization flags for TEST build
added tests for flat_map
added more erase tests to flat_map_test.cpp
improve flat map test coverage
improve flat map test coverage
dummy commit
Merge branch 'development' of ds1:/home/ewfiseli/workspace/elib into development

Conflicts:
	src/container/unit_tests/flat_map_test.cpp
add linear_flat_map tests
improve coverage
improve flat map coverage
add unit tests for directory_entry
fixed build system error with flags
fs tests and exception tests
added some lcov exclusions
update throw signatures in exception