Merge pull request iheid-library#67 from jhollway/develop

#minor bump Changed IHEID logo on title page from .eps to .png

Merge pull request iheid-library#43 from jhollway/develop

Added full bibliography support, appendices and an IHEID ggplot template

Merge pull request iheid-library#41 from jhollway/develop

Added iheid_palette(s) functions

Add Linux check, build, and release

Merge pull request iheid-library#31 from jhollway/develop

Refined README

Merge pull request iheid-library#21 from jhollway/develop

Adding chapter_pdf()

Merge pull request iheid-library#17 from jhollway/develop

Improvements to syllabus_pdf and template

Merge pull request iheid-library#15 from jhollway/develop

Overhaul of thesis template

Merge pull request iheid-library#14 from jhollway/develop

Addressed key errors

Merge pull request iheid-library#12 from jhollway/develop #minor

* Differentiated between PhD theses and masters dissertations in front pages
  * Breaking change: Note that you will now need to specify phd: true or phd: false in metadata
* Added supervisor and second reader information to metadata, appear on first page
  * Added external examiner information to metadata, appears on first page for PhDs
* Updates to pull request template