fix: Pasting Address with Newline Characters and Spaces Work

[chitowncrispy]

Description

I created a new method on the extension of String to filter out all the newline characters and spaces. I then utilized this method in the 2 places we reference the string placed on the UIPasteboard in order to clear out all the newline characters and spaces.

Motivation and Context

This is to address issue #225 .

How Has This Been Tested?

I pasted an example of a testnet bitcoin address and a testnet lightning node address into Atom and then added newlines and spaces at the beginning, middle and end of the address. I then copied those newly created addresses I created and clicked the Paste Address button in the app. When doing this the address was recognized without the newline characters and spaces.

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[codecov-io]

Codecov Report

Merging #300 into master will decrease coverage by 0.13%. The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #300      +/-   ##
==========================================
- Coverage   11.18%   11.04%   -0.14%     
==========================================
  Files         230      230              
  Lines        9077     9077              
==========================================
- Hits         1015     1003      -12     
- Misses       8062     8074      +12

Impacted Files	Coverage Δ
...es/QRCodeScanner/QRCodeScannerViewController.swift	0% <0%> (ø)	:arrow_up:
...htning/Certificates/PinnedURLSessionDelegate.swift	75.86% <0%> (-20.69%)	:arrow_down:

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[chitowncrispy]

@ottosuess this one should be ready to go. Let me know if you have any other concerns.

[ottosuess]

🔥 sweet