(v0.6.1.9044) first_isolate fix for species

NEWS.md

@@ -7,6 +7,7 @@
 * Added guidelines of the WHO to determine mutli-drug resistance (MDR) for TB (`mdr_tb()`) and added a new vignette about MDR
 
 #### Changed
+* Fixed a critical bug in `first_isolate()` where missing species would lead to incorrect FALSEs. This bug was not present in AMR v0.5.0, but was in v0.6.0 and v0.6.1.
 * Completely reworked the `antibiotics` data set:
   * All entries now have 3 different identifiers:
     * Column `ab` contains a human readable EARS-Net code, used by ECDC and WHO/WHONET - this is the primary identifier used in this package
@@ -24,6 +25,7 @@
 * Improved intelligence of looking up antibiotic tables in data set using `guess_ab_col()`
 * Added ~5,000 more old taxonomic names to the `microorganisms.old` data set, which leads to better results finding when using the `as.mo()` function
 * This package now honours the new EUCAST insight (2019) that S and I are but classified as susceptible, where I is defined as 'increased exposure' and not 'intermediate' anymore. For functions like `portion_df()` and `count_df()` this means that their new parameter `combine_SI` is TRUE at default.
+* The `age()` function gained a new parameter `exact` to determine ages with decimals
 * Removed deprecated functions `guess_mo()`, `guess_atc()`, `EUCAST_rules()`, `interpretive_reading()`, `rsi()`
 * Frequency tables (`freq()`):
   * speed improvement for microbial IDs