v3.2.1: Merge pull request #4 from cbuilder/master

Version 3.2.1 (05.2021):

• Fix: RISC-V (RV32I) interrupt synchronization support.
• Fix: Makefiles for linux based build system.
• Fix: Minor list data type optimization.

v3.2.0: Merge pull request #2 from cbuilder/master

Version 3.2.0 (07.2020):

• New: RISC-V (RV32I) platform support.
• New: Redesigned kernel initialization procedure. Removed metadata-based ctors.
• Fix: Global refactoring and code style fixes.
• Fix: Improved init procedure for cortex-m chips.