Document and annotate the library for unstable release, add todos for consideration #169

Job	Run time
Code Coverage	8m 58s
docs	14s
clippy	25s
feature-checks	17s
fmt	15s
test stable --no-default-features	1m 16s
test stable	1m 23s
test stable --all-features	1m 16s
test beta --no-default-features	1m 11s
test beta	1m 16s
test beta --all-features	1m 14s
test nightly --no-default-features	1m 14s
test nightly	1m 11s
test nightly --all-features	1m 12s
	21m 22s

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