Configurable default numeric type

[bortolin]

Hi Davide,

The Parser correctly consider numbers as integers or doubles if they have decimal places just like the C# compiler does.

In some cases it may be useful to be able to configure the default type of numbers if no particular suffix is ​​specified: for example in financial calculations, where usually numbers are interpreted as decimal type.

Another user @MrGorki have write about this on this issue #35.

I have implemented DefaultNumberType settings for configure the default type of number (Int, Long, Float, Double, Decimal).

I have also update documentation about this new features to specify how to use.

I have not touch the default behavior of parser if the settings is not set or set to Default.

I hope this new feature can be useful to others who like me use this beautiful library in financial application.

Marco

[davideicardi]

Thank you @bortolin ! I like the idea!

I will review the code in depth in the following days.

@metoule Given that you have recently touch that part of the code, can I ask your help on review it when you have some free time? Do you see problems?

[metoule]

I'd just add a few more tests, but otherwise it looks good to me :)

[davideicardi]

Thanks! I ask you two final changes. See my comments.

[davideicardi]

Great! Thank you!

[davideicardi]

Published in version 2.6.0

[metoule]

I think this PR closes #35 ?