Merge branch 'laravel6-adminlte3'

* laravel6-adminlte3: (33 commits)
  change readme for older versions
  enhanced url config values & more (#410)
  Update composer.json (#408)
  Apply fixes from StyleCI (#407)
  fixed main_views copy and added load fallback (#406)
  some small various fixes & new  adminlte:status command (#399)
  some little fixes & enhancements (#397)
  readme update & small fixes in install command (#395)
  Refactoring ServiceProvider and adminlte:installer (#381)
  Delete package-lock.json
  Add Laravel Mix instructions (#384)
  Add missing header tag (#383)
  rename service provider in readme
  AdminLTE v3 sidebar menu highlight fix & composer driven vendor assets (#378)
  fix tests
  fix tests
  add adminlte logo
  rename adminlte css min
  rename adminlte css
  cleanup
  ...

.travis.yml

@@ -1,9 +1,8 @@
 language: php
 
 php:
-  - 7.0
-  - 7.1
   - 7.2
+  - 7.3
 
 env:
   matrix: