SAS Packages Framework, version 20221121

## SAS Packages Framework, version 20221121

---

### New feature of "Cherry picking" added to the SAS Packages Framework.
Sometimes a package offers so many features that the number may be "overwhelming".
In such case only some of them may be selected for loading. Such process
is called a "cherry picking". The feature is provided by the `%loadPackage()` macro
which uses a `cherryPick=` parameter (see description below).

For example, execution of the following code:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
 %loadPackage(BasePlus, cherryPick=rainCloudPlot getVars)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
results with loading only the `rainCloudPlot` and the `getVars` elements.
If several object types (e.g., a macro and a format) share the same name
all will be loaded.

What is the trade-off?
- Since the cherry picking selects only a part of the package the `SYSloadedPackages`
macrovariable is not updated with the package name.
- Dependencies i.e., packages from the `ReqPackages` list, are not loaded automatically,
so they have to be loaded manually.
- The `%unloadPackage()` macro executed on such partially loaded package may issue
some (irrelevant) warnings.

---

### Changes in `%loadPackage()` macro:
- New `cherryPick=` parameter added to the macro.
  As a value a *space separated* list of selected elements
  of the package to be loaded into the SAS session is expected.
  Default value of an asterisk (`*`) means: "load all elements of the package".
  Empty list is equivalent to default.
- Documentation updated.

### Changes in `%generatePackage()` macro:
- Code adjustment for the cherry picking feature.
- Minor additional code refactoring.
- The `%ICEloadPackage()` macro does not support cherry picking.

---

### The following packages were regenerated with the latest version of the framework:
- BasePlus [1.17.2]
- DFA [0.5.2]
- dynMacroArray [0.2.2]
- GSM [0.20.2]
- macroArray [1.0.2]
- SQLinDS [2.2.2]

packages/baseplus.md

@@ -56,7 +56,7 @@
   
 ---
 
-# The BasePlus package [ver. 1.17.1] <a name="baseplus-package"></a> ###############################################
+# The BasePlus package [ver. 1.17.2] <a name="baseplus-package"></a> ###############################################
 
 The **BasePlus** package implements useful
 functions and functionalities I miss in the BASE SAS.
@@ -273,10 +273,10 @@ Package contains:
 48.  functions  quicksorthashsddv 
 49.  functions  quicksortlight 
 
-*SAS package generated by generatePackage, version 20221112*
+*SAS package generated by generatePackage, version 20221121*
 
 The SHA256 hash digest for package BasePlus: 
-`A80006D3C1409465E49F383D08F2F3AF1E33D6A67D71A8CAF29747ADC917E2E4` 
+`EBA9EDB3D50D854288970CC0E965DA6AD5B057F6E6433EEBEC4A02B9A25CF6E2` 
 
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 # Content description ############################################################################################