Version bump to 0.7.0.pre
Added `spout graphs` command that generates pie charts and histograms of each variable in a dataset, closes #26.
Version bump to 0.7.0.beta1
Create a graphs folder in case it does not yet exist, fixes #30
Version bump to 0.7.0.beta2
Version bump to 0.7.0.beta2
Merge branch '0.7.0' of github.com:sleepepi/spout into 0.7.0
Spout graphs command can now take filter flags, closes #31.

- The following flags are available:
  - `spout g --type-numeric`
  - `spout g --type-integer`
  - `spout g --type-choices`
  - `spout g --size-lg`
  - `spout g --size-sm`
  - `spout g --type-numeric --size-sm`
- For specific variables the following can be used:
  - `spout g --id-<variable_id>`
Version bump to 0.7.0.beta3
Use SVG for badges
Updated license year
Version 0.7.0 finalized