• Fixed infinite loop when removing macros with % in the name. (#244)
• Added a possibility to undefine system macros by setting a macro value to None in the macros argument of the Specfile constructor. (#244)
• Fixed a bug in processing options of %prep macros. For instance, when a quoted string appeared inside an expression expansion, it could lead to improper parsing, rendering the spec file invalid after accessing the options. (#253)