Pyenv

* python-build: Update default pip version (1.4 -> 1.4.1)
* python-build: Update default setuptools version (0.9.7 -> 1.1.6)

* python-build: Add CPython 3.7.2 and CPython 3.6.8 (1256)
* python-build: Add anaconda[23]-5.3.1 (1246)
* python-build: Add Anaconda 2018.12 (1259)
* python-build: Fix ironpython-dev git repo url (1260)
* python-build: Add `OPENSSL_NO_SSL3` patch for CPython 3.3.7 (1263)

* python-build: Add CPython 3.7.1
* python-build: Add CPython 3.6.7
* python-build: Add anaconda[23]-5.3.0 (1220)

* python-build: Add CPython 3.5.6 (1199)
* python-build: Add CPython 3.4.9

* python-build: Added CPython 3.6.6 (1178)
* python-build: Check wget version iff wget is going to be used (1180)

* python-build: Add CPython 3.7.0 (1177)
* python-build: Add micropython 1.9.4 (1160)
* python-build: Add anaconda[23]-5.2.0 (1165)
* pyenv: Fix `seq(1)` is not available on OpenBSD (1166)