Incompatible with old versions of TikZ (as recent as TexLive 2018)

[tdwiser]

Some features are used and assumptions are made that break when the package is used on TeXLive 2018. (Maybe I'm just too stubborn having not upgraded lately.)

• dash line option shortcut doesn't exist; need to use dash pattern and dash phase
• Bug in TikZ patterns.meta library; overwrites part of the pgf pattern library (workaround by importing the library later)
• Old version is very sensitive to spaces; fix by removing a newline

Pull request incoming...