Upgrades Gradle

Adds a nonull notation for argument

Fixes the copyright notice

Fixes duplicated units in weeks report

Fixes a few memory leaks

Fixes potential (supposedly imopssible) bug: YearInfo is found or throws

Fixes bug and gives cosmetic changes to Speed.

Removes db upgrade conversions due to crashes

Refactors code, and adds temperature and isCompetition fields

Adds fields race & temperature. Plus, a much needed refactoring; adds…

Adds a new graph (days) and standardizes thousands units in graphs

Fixes a few minor bugs

Adds the achievements activity

Fixes the error of 0% progress at the main activity.

Removes units at the end of each line in mainactivity so it gains mor…

Bumped android app version

Bumps serial number

Solves issue #13: added new objectives OWS and pool

Solves issue #12: reorders the elements

Fixes issue #8: adds a 'notes' field in session

Adds a new setting for the pool length

Shortens 'laps' labels for narrow devices

Bumps version

Updates the screenshots to the last version

Yet another Gradle Project Upgrade

Fixes Google Target API requirement