Add Advanced R book

Add separate language shelve
2 changed files with 9 additions and 0 deletions
--- a/langs/R.bib
+++ b/langs/R.bib
@ -0,0 +1,9 @@
@misc{advanced-R,
 	author = {Wickham, Hadley},
 	title = {{Advanced R}},
 	year = {2023},
 	month = apr,
 	language = {english},
 	note = {[Online; accessed 25. Apr. 2023]},
 	url = {https://adv-r.hadley.nz}
 }
--- a/langs/haskell.bib
+++ b/langs/haskell.bib
Author	SHA1	Message	Date
Aleksey Zubakov	5879a3df49	Add Advanced R book	2 years ago
Aleksey Zubakov	fec8a7d15a	Add separate language shelve	2 years ago