began preparation of  version 1.00
began version comparisons description
made constants privates
fix bad normalization 'final-0.1' -> (0,1)

now 'final-0.1' -> (,0,1)
Merge branch 'fix-empty-0-pos-normalization' into pod
transform 'undef' to contstant _UNDEF
add to_string pod & continued pod DESCRIPTION
added test 17 to normalization tests
fix _append_zero function
Merge branch 'fix_zero_app_normalization' into pod
completed 'zero appending' pod

And removed Language::Functional using
add %settings constructor parameter
add max_depth comparison features
add compare_to pod
add SOURCE pod head
add integeritem comparison tests (pod examples)
started to replace parameters by hash (compare_to)

this is a broken state
changed compare_to parameters to hash
Merge branch 'compare_to_settings' into pod
Merge branch 'pod'