Unable to install new demo

[LARAVELNEWEY]

Hello, i found 3 problems on the new demo.
On the posts tables, the author_id is not defined as unsigned so when the migration tries to create the foreign key fails
public function up() { Schema::table('posts', function (Blueprint $table) { $table->integer('author_id')->nullable(); $table->foreign('author_id')->references('id')->on('authors')->onDelete('cascade'); }); }
it can be solved just changing the function to
public function up() { Schema::table('posts', function (Blueprint $table) { $table->integer('author_id')->unsigned()->nullable(); $table->foreign('author_id')->references('id')->on('authors')->onDelete('cascade'); }); }

Same error on articles with relationships table, with the field author_id
The last one is articles_with_relationships_tags table, the foreign key name is too long (max is 64 characteres).
This one can be solved just passing the key name as a second parameter to the foreign method

[alexconrad]

i created a pull request with the changes
https://github.com/BRACKETS-by-TRIAD/craftable-demo/pull/21/files

and another fix as i got
mb_strtoupper() expects at most 2 parameters, 3 given
when trying to create new article with relationship