This update to Nempy:
- Adds the very fast frequency raise and lower market. These use the names lower_1s and raise_sec1 in the nempy inputs tables. Thanks @mlee94 for pull request #20 which added this functionality.
- Removes some redundant reloading of input data. Thank @yueXiao2 for PR #16
- Bumps urllib3 from 2.0.4 to 2.0.6 which resolves a security issue in urllib, see #21
- Fixes some typos in examples