core.moduleapi: Improve handling of different types in :get_option_period Pass positive numbers trough unharmed, parse strings as periods, discard anything else.

core.moduleapi: Add :get_option_period for parsing time intervals E.g. for use in mod_mam and others that take an amount of time before some (usually cleanup) action is taken.

core.moduleapi: Allow specifying an acceptable range for number options

plugins: Use get_option_enum where appropriate

moduleapi: Add enum config option method For when a setting has a few fixed values it can take

tools: Fix file ending of mod2spec.sh (thanks buildbot) Accidentally .lua ?

util.human.io: Fix pattern in parse_duration() to cover all used letters Notably 'h' was missing. Awkwardly, 'hour' would result in 'ho' which was missing from table.

util.human.io: Add tests for parse_duration() (some failing)

util.human.io: Include relevant arguments in test messages This way the relevant arguments are shown in case a test case fails

util.human.io: Use tail call in test to get correct line numbers This is probably not guaranteed to work and might vary with Lua version, but it's good enough for me to get accurate line numbers out of Busted that don't all point to the test() function.