Bump version, introduce Semantic Versioning (https://semver.org)

Author: lmoellendorf

doc/iniparser.dox

@@ -48,7 +48,7 @@ PROJECT_NAME           = iniparser
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.2
+PROJECT_NUMBER         = 4.2.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

iniparser.pc

@@ -7,6 +7,6 @@ datadir=${datarootdir}
 
 Name: libiniparser
 Description: Iniparser library
-Version: 4.2
+Version: 4.2.1
 Libs: -L${libdir} -liniparser
 Cflags: -I${includedir}