fix number parser for hexadecimal

Closes #5

See merge request !8

Version 2.4.0

See merge request !7

HELP.md ldr has registers 3 as return register, this should be register 4. The...

See merge request !6

HELP.md ldr has registers 3 as return register, this should be register 4. The heap pointer (R3) was skipped.

CI example and test the test programs

See merge request !5

change HELP.md to tell the user about the correct encoding of True.

See merge request mlubbers/ssm!3

Hexadecimal input is now possible in the SSM interpreter

See merge request mlubbers/ssm!4

Fix #2

Closes #2

See merge request mlubbers/ssm!2

helpgen

See merge request mlubbers/ssm!1

This reverts commit 2ef8a586.