add result-per-story command to group by story the hours spent on the sprint
compare result-per-story to estimations and print percent of achievement
start to add proper exceptions and refactor secretparser a bit
some refactoring to ease testing
add tests for parsers and base command
refactoring the base command class by adding helpers
add tests for base command and check-hours command
new class to wrap user input and associated tests + started to refactor add-sprint command
add test for jira-config-helper command and some refactoring to ease testing
Merge remote-tracking branch 'origin/testing' into dev
add last zebra day command and tests
Merge remote-tracking branch 'origin/last_zebra_day' into dev
add current option in config to specify a default sprint
Merge branch 'currentSprintConfig' into dev
update README to add comment about _current
consider both internal and external projects in check-hours command #Fixes 5
add absolute result value to burnup headers (not only percent)
Merge remote-tracking branch 'origin/dev' into hours_per_story

Conflicts:
	lst/__init__.py
	lst/commands.py
first attempt at outputing a graph for stories result
improve graph rendering