[RELEASE] iText 7 pdfSweep - 1.1.1

https://github.com/itext/i7j-pdfsweep/releases/tag/1.1.1

* release/1.1.1:
  [RELEASE] 1.1.1-SNAPSHOT -> 1.1.1
  Fixed an issue where .getFontFromAcroForm() method was called on a pdf without an AcroForm, resulting in a NullPointerException. This is fixed by adding an extra check on the availability of the AcroForm before querying it.
  Update pom parent with iText 7.0.7 SNAPSHOT
  Update copyright header
  Avoid unnecessary TJ operator before writing text with ` or ", handle empty TJ array
  Process new line operators while text cleaning. Minor changes.
  Process TJ only with numerical operands. Add a test.
  Add sources jar
  :bookmark: 1.0.3-SNAPSHOT -> 1.1.1-SNAPSHOT

pdfSweep 1.1.0

Merge branch 'release/1.1.0'