+ Pin all pip versions
~ Verify versions made more PDK independent, reads .config/nodeinfo.json
~ Make `requirements_lint.txt` separate
~ Update to new Black: changes to ** operator formatting
~ Various spelling/grammar fixes
~ git:// -> https://

~ 60ps -> 500ps

+ Enable insert_buffer to be used outside of the ECO flow
+ Added ability to use interactive.tcl in issue regression flow
~ Made the ECO flow far less chatty
~ Other non-functional ECO flow tweaks
~ Merged apply_fix.tcl and eco.tcl into eco.tcl
~ Added `cat` command to utils.tcl

+ Add CTS_DISTANCE_BETWEEN_BUFFERS, which is passed on to TritonCTS

+ Adds `SYNTH_EXTRA_MAPPING_FILE` which points to extra techmap file for yosys that runs right after yosys `synth` before generic techmap.

Co-authored-by: Donn <me@donn.website>

~ `-halo_width_y` was set `FP_TAP_HORIZONTAL_HALO` to instead of `FP_TAP_VERTICAL_HALO `

+ `-verbose` flag added with multiple levels, replacing `-disable_output` (which is now the default behavior)
+ New command `puts_verbose` added, to be used for extra pieces of information
+ ./flow.tcl header now includes version, copyright and licensing information
+ Added `-last_run` flag allowing you to quickly resume the last run (useful with -interactive)
+ Added `open_in_klayout` command that lets you open the CURRENT_DEF in Klayout
~ `env.py issue-survey` now detects whether it's running inside the container and warns accordingly
~ RUN_KLAYOUT, RUN_KLAYOUT_DRC, RUN_MAGIC_DRC, RUN_LVS now only control noninteractive flows
~ Full git hash added to containers
~ Various Documentation Updates
~ Changed verbosity of various output messages
- Removed `-disable_output` (now the default behavior)
- Removed OpenLane ASCII art
- Removed various "chatty" messages, including things succeeding (shut up unless something fails)

Resolves #988

[skip ci]

[skip ci]

Resolves #958 

Merging to mitigate #954 

This adds an issue-specific CI that can be used to test specific regressions rather than running entire flows.

Also, a partial solution for #892.

[skip ci]

Merging to fix #912. 

+ Always call set_propagated_clock after CTS
- Remove unused or_rpt.tcl script

+ Add two new synthesis strategies based on ORFS abc scripts

[skip ci]

Signed-off-by: Vitor Bandeira <vitor.vbandeira@gmail.com>