poppler 0.28.1

Successfully installed diff-pdf inkscape mat pdf2svg pdfgrep pdftoipe xournal against it.

1. pdf-tools fails due to mismatched type: 
https://gist.github.com/anonymous/5630bafd56b758942040

2. frescobaldi fails to install as it depends on fontforge which is awaiting stable fixes soon:
https://github.com/Homebrew/homebrew/pull/33551

3. pdf2htmlex fails to install:

```
admin@doppio /usr/local $ brew install pdf2htmlex
==> Downloading https://github.com/coolwanglu/pdf2htmlEX/archive/v0.12.tar.gz
Already downloaded: /Library/Caches/Homebrew/pdf2htmlex-0.12.tar.gz
==> Cloning https://github.com/coolwanglu/fontforge.git
Updating /Library/Caches/Homebrew/pdf2htmlex--fontforge--git
==> Checking out branch pdf2htmlEX
==> ./autogen.sh
==> ./configure --prefix=/usr/local/Cellar/pdf2htmlex/0.12/fontforge --without-libzmq --without-x --without-iconv 
Error: inreplace failed
Makefile:
  expected replacement of "/Applications" with "$(prefix)"
```

But I'm not sure what the error is yet:
https://gist.github.com/anonymous/db90fa065b1fa20d59f5