v0.14.2

What's Changed

• Limit the number of too hard or easy exercises added to the batch by @martinmr in #216
• Add method to remove all units with a prefix from the blacklist by @martinmr in #217
• Increase the weight of a candidate based on its lesson's frequency by @martinmr in #218
• Add duration to transcription tracks by @martinmr in #219
• Improve dependencies in transcription courses by @martinmr in #220

Full Changelog: v0.14.1...v0.14.2