v1.11

• New option --ignore-errors, continues rendering the tree even if some node(s) have failed. Contributed by @benf710

v1.10

• Python 3.10 support

v1.9

• compat for cachetools.ttl submodule disappeared in v4.2.3

v1.8

• Sometimes pipper.py could crash if used simultaneously from multiple threads. This release is more thread safe.

v1.7

• fix for pip 20.3.x

v1.6

• Added new field for license

v1.5

• toml provider is changed from pytoml (deprecated) to toml

v1.4

• support pip v20.0.2 (for real this time)

v1.3

• support pip v20

v1.2

• Improved handling of non-trivial environment markers.