Suggestion: remove "else"

[stohrendorf]

The else keyword is usually useless for the following reasons:

• an if ... else if chain can be written as a series of if statements.
• an if ... else statement can be written by initializing variables with a default value, and overwrite them (if necessary) within an if statement
• given when ... else, the else is usually an unexpected condition, and this means the programmer is incompetent

This relates to #122, and simplifies the language, so newbies can learn something about computer science.

[Mixer001]

We can already do delete else! at the beginning of a file. However, to achieve a consensus and save time, that line could be added by compiler by default. If someone wants to use else anyways, a new directive ;delete else might come at handy.

[stohrendorf]

Interesting idea. I like ;delete instead of undelete or restore or recycle or whatever keyword, although personally I would prefer -delete.

[jessiejs]

Instead of ;delete else, we have add (new todepond.dreamberd.lang.syntax.features.FeatureSingletonFactoryManager()).factory().getElse().create(). Please note that in all code after 1 + 1 would be invalid syntax, instead you would do add(1,1)

[jessiejs]

But don't worry you can still delete add.