v3.1.0

This is prmon release v3.1.0, Lacaille 9352

Major item is a fix for changed Nvidia utility output for GPU monitoring (thanks to Johannes Elmsheuser, @elmsheus)
Many smaller bugs and enhancements:

What's Changed

• Add CITATION.cff file by @graeme-a-stewart in #224
• Add the DOI to the citation file by @amete in #225
• Update citation name and (C) year by @graeme-a-stewart in #226
• Fix the empty netmon description in the help message by @amete in #227
• Add long option to pstree to prevent truncating by @miguelgila in #228
• Cmake warning by @graeme-a-stewart in #230
• Support multiple plots by @Cossack42 in #232
• Make logging output file name configurable by @amete in #233
• prmon_plot: don't use square brackets around units by @olifre in #236
• Nvidia monitor fixes by @graeme-a-stewart in #239
• Update externals by @graeme-a-stewart in #241

New Contributors

• @miguelgila made their first contribution in #228
• @Cossack42 made their first contribution in #232
• @olifre made their first contribution in #236

Full Changelog: v3.0.2...v3.1.0