Econtools for Python
cyvincenty (code and documentation) is a very fast Cython (Python and C
pidgin) implementation of Vincenty's distance formula.
Stata syntax for Vim
vim-stata (code and documentation) is an extension of the Stata syntax
package that comes with Vim. It covers more commands and situation and also
includes some minimal folding. It can be installed using Pathogen, VimPlug,
biblatex-aer (code and documentation) is a port of AER's
bibliography style to Biber and BibLaTeX. BibLaTeX offers a much larger
set of options than the older BibTex package. However, it requires its own
style files and cannot use BibTex's
bst style files.