Basic calculation support using 'bc'
Added lib/units.rb -- a multi-units converter;
Simplified lib/sizes.rb -- added `-h` switch for `du`;
Added conversion support for hours.
Minor code simplification.
Fix commands module.
Merge branch 'dev' of https://github.com/pickhardt/betty into dev
Added conversion support for milliseconds, microseconds and nanoseconds.
updates tar to allow output specification
adds various common compression formats
adds command help for compression types
cleans up a little and adds short commands
Pod bay doors added to Fun module
Add offline speech
Merge pull request #114 from ilvar/dev

Pod bay doors added to Fun module
Instructions for making a new release.
Rename to betty_autocomplete (use underscores).
Rename to autocomplete. Since it is inside the betty directory, it doesn't need the prefix.
Prefer JSON syntax for hashes.
Merge pull request #115 from igorrKurr/say-improvment

Say improvment
Merge pull request #113 from wfalkwallace/dev

updates tar to allow output specification