Update of my website to Bootstrap 5

I updated my website so that it looks new and shiny and provides faster and easier access.

I used the following tools:

• Jekyll
• Bootstrap 5
• Visual Code
• Windows Subsystem for Linux (WSL2)

And i also have some nice syntax highlighting, too. For example Kotlin

fun nice() = (1..5).map { println "i=$it" }

Ruby

def foo
  puts 'foo'
end

and Groovy

for ( book in library.books ) {
    println book.author.name + ', ' + book.title + ', ' + book.category + ', ' + book.pages 
}