Convert font names to tex
Move font styles like \bf into the \text{} command.
Merge adjacent text fields
Replaced old command tt by newer ttfamily
Merging of adjacent \text commands is now an own function
New ACID test: image orientation

Systematic test of image orientation (`XDir` and `YDir`) and axis visibility (`axis off`)
Split test to cover inline code and external PNG

* imageOrientation_inline works as expected
* imageOrientation_PNG fails due to bug, unrelated to test
Fix inlining images in TikZ code
Fix inlining images in TikZ code
Merge pull request #423 from PeterPablo/fix_ACID_114_image_inline_v2

[ACID]Fix testcase 114 imageOrientation_inline
Merge pull request #422 from PeterPablo/ACID_new_test_imageOrientation

[ACID]New tests image orientation
Remove duplicate test imageplat

It was replaced an extended by `imageOrientation_PNG`
and `imageOrientation_inline`.
Escape backslash in header of generated acid.tex
Improve code style of inline image code

Please forgive the removal of the line ending ^M below.
I tried for at least half an hour to convince git to ignore this.
Merge pull request #424 from PeterPablo/remove_duplicate_test_imageplot

Remove duplicate test imageplot
Remove deprecated test doubleAxes (#425)
Merge pull request #428 from PeterPablo/ACID_remove_test_doubleAxes

Remove deprecated test doubleAxes (#425)
Merge remote-tracking branch 'broele/parseTexString'
Merge remote-tracking branch 'PeterPablo/ACID_improve_inline_image_v2'
Test Harness: fix `extraFunctionFromError`

When the error occurs in the upper stack frame, handling
was impaired, because the upper+1 stack frame was queried.
Instead, now we first initialize the function name to '' and
explicitly check before indexing.

In that case, the function name is not returned, but it is also very
likely the function has not even been called.