[refactor] import log facade instead of relying on alias

duplicates always-open#218 resolves always-open#221

[fix] move Throwable import statement to the bottom to comply with st…

…yleci rules

[fix] code style

[fix] results table migration

* update results table migration to avoid setting collation and character set on duration column

[fix] change to dependency versions to caret

- changes laravel dependency versions to caret

[chore] updates docs

- updates readme, changelog etc for new release

[refactor] cache busting

- busts cache when a new task is created to rebuild cache

Added migration to move duration from varchar to decimal (always-open…

…#187)

* Added migration to move duration from varchar to decimal

* Added doctrine dbal requirement

* Updated from double to decimal

[feature] toggle broadcasting

* adds the ability to toggle broadcasting on/off 
* allows setting the specific channel name it should broadcast on.

[fix] task list last run at time format

- changes last run at timestamp format to 24 hours on task list

resolves always-open#171