Fixing filters with uppercase letters

[igalarzab]

Hi!

Filters that are using uppercase characters are broken as the lowercase() method is being executed to the name before registering them into the SimpleLibrary.

They are broken because in the fetch method the filter name is just lowercased before being compared with the existing ones, but not before adding them to the library, so what's happening is that:

• The filters are registered with the camelcase name inside the library, ex: filterName.
• The filters cannot be accessed, as the fetch method tries to find a filter named filtername.

There were two solutions:

1. Lowercasing the filter before doing the put into the HashMap.
2. Allowing filter names to have not just lowercase characters.

I chose the second option as I didn't see any reason for the restriction.

I added one test and the patch is backwards compatible, as filters with uppercase characters were not usable before.

[igalarzab]

Hi @boulter,

that was fast! thanks for merging it :)

Any possibility of having a new release in mvn?

[jmp3833]

Hi @igalarzab. Going to create a new release 2.2.4 in maven that includes these changes in addition to #133. I'll let you know when the new version is available 👍

[igalarzab]

great, thanks @jmp3833 !

[jmp3833]

No problem! Should be available in the central repository within the next couple of hours