Merge pull request cantools#703 from j-c-cook/issue702_DefaultVersion

Modify the default version to be an empty string

Merge pull request cantools#698 from trnila/fix-cache-keys

Enable cache via env variable and improve cache key

Merge pull request cantools#697 from trnila/monitor-case-insensitive-…

…filter

monitor: case insensitive filtering

Merge pull request cantools#696 from trnila/monitor-error-handling

monitor: fix crash while decoding message with bad length

fix J1939 SPN parsing (cantools#650)

Merge pull request cantools#645 from RCMast3r/fix_sym_number_regex

slight modification to regex to enable small scaling factors that have scientific numbers in them

Merge pull request cantools#643 from ciepme/enum_newlines

Enum newlines

Merge pull request cantools#637 from zariiii9003/fix_636

Fix range check with negative scalings

Merge pull request cantools#630 from joooeey/candump_rt_support

Plotting support for "R" or "T" at end of `candump -l` output lines.

Merge pull request cantools#622 from andlaus/container_improvements

Container improvements