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/gsm.md

@@ -8,7 +8,7 @@
 ---
 
 
-# The GSM package [ver. 0.20.1] <a name="gsm-package"></a> ###############################################
+# The GSM package [ver. 0.20.2] <a name="gsm-package"></a> ###############################################
 
 The **GSM** (a.k.a. *Generate Secure Macros*) package allows
 to create secured macros stored in SAS Proc FCMP functions.
@@ -91,10 +91,10 @@ Package contains:
 Required SAS Components: 
   `Base SAS Software`
 
-* SAS package generated by generatePackage, version 20221112 *
+* SAS package generated by generatePackage, version 20221121 *
 
 The SHA256 hash digest for package GSM: 
-`5D1925970C9590CD195C15B8641B01D7857E3B2546323DC77D09154BCCA40922` 
+`E47C94B536B661DEE390F5C3EA1684DD1A246106F4FBBDAFA57F5E34D4BB16D5` 
 
  
 ## >>> `%GSM()` macro: <<< <a name="gsm-macro"></a> #######################